@AWI
Thanks for your reply and tips to a beginner.
I experimented with a couple of things in the sketch and after a little digging I seem to have got it working.
The problem seem to be that if the values sent to the gateway is not in the correct format it wont work. If I send just one value in integer it works. But if I send alla three values as integer it stops working. If I send all three as "double" with two decimals it works as it should.
The sketch when it functions as it should:
/******************************************************************************
I2C_ReadAllData.ino
BME280 Arduino and Teensy example
Marshall Taylor @ SparkFun Electronics
May 20, 2015
https://github.com/sparkfun/SparkFun_BME280_Arduino_Library
This sketch configures the BME280 to read all measurements.  The sketch also
displays the BME280's physical memory and what the driver perceives the
calibration words to be.
Resources:
Uses Wire.h for I2C operation
Uses SPI.h for SPI operation
Development environment specifics:
Arduino IDE 1.6.4
Teensy loader 1.23
This code is released under the [MIT License](http://opensource.org/licenses/MIT).
Please review the LICENSE.md file included with this example. If you have any questions 
or concerns with licensing, please contact techsupport@sparkfun.com.
Distributed as-is; no warranty is given.
******************************************************************************/
#include <stdint.h>
#include "SparkFunBME280.h"
//Library allows either I2C or SPI, so include both.
#include "Wire.h"
#include "SPI.h"
#define MY_DEBUG 
#define MY_RADIO_NRF24
#include <MySensors.h>
#define SKETCH_NAME "Environment Sensor"
#define SKETCH_MAJOR_VER "1"
#define SKETCH_MINOR_VER "0"
#define CHILD_ID_1 1
#define CHILD_ID_2 2
#define CHILD_ID_3 3
//Global sensor object
BME280 Sensor;
MyMessage msg1(CHILD_ID_1, V_TEMP);
MyMessage msg2(CHILD_ID_2, V_HUM);
MyMessage msg3(CHILD_ID_3, V_PRESSURE);
void setup()
{
	//***Driver settings********************************//
	//commInterface can be I2C_MODE or SPI_MODE
	//specify chipSelectPin using arduino pin names
	//specify I2C address.  Can be 0x77(default) or 0x76
	
	//For I2C, enable the following and disable the SPI section
	Sensor.settings.commInterface = I2C_MODE;
	Sensor.settings.I2CAddress = 0x77;
	
	//For SPI enable the following and dissable the I2C section
	//Sensor.settings.commInterface = SPI_MODE;
	//Sensor.settings.chipSelectPin = 10;
	//***Operation settings*****************************//
	
	//renMode can be:
	//  0, Sleep mode
	//  1 or 2, Forced mode
	//  3, Normal mode
	Sensor.settings.runMode = 3; //Normal mode
	
	//tStandby can be:
	//  0, 0.5ms
	//  1, 62.5ms
	//  2, 125ms
	//  3, 250ms
	//  4, 500ms
	//  5, 1000ms
	//  6, 10ms
	//  7, 20ms
	Sensor.settings.tStandby = 5;
	
	//filter can be off or number of FIR coefficients to use:
	//  0, filter off
	//  1, coefficients = 2
	//  2, coefficients = 4
	//  3, coefficients = 8
	//  4, coefficients = 16
	Sensor.settings.filter = 0;
	
	//tempOverSample can be:
	//  0, skipped
	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
	Sensor.settings.tempOverSample = 1;
	//pressOverSample can be:
	//  0, skipped
	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
    Sensor.settings.pressOverSample = 1;
	
	//humidOverSample can be:
	//  0, skipped
	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
	Sensor.settings.humidOverSample = 1;
	
//	Serial.begin(57600);
	Serial.print("Program Started\n");
	Serial.print("Starting BME280... result of .begin(): 0x");
	
	//Calling .begin() causes the settings to be loaded
	delay(10);  //Make sure sensor had enough time to turn on. BME280 requires 2ms to start up.
	Serial.println(Sensor.begin(), HEX);
	Serial.print("Displaying ID, reset and ctrl regs\n");
	
	Serial.print("ID(0xD0): 0x");
	Serial.println(Sensor.readRegister(BME280_CHIP_ID_REG), HEX);
	Serial.print("Reset register(0xE0): 0x");
	Serial.println(Sensor.readRegister(BME280_RST_REG), HEX);
	Serial.print("ctrl_meas(0xF4): 0x");
	Serial.println(Sensor.readRegister(BME280_CTRL_MEAS_REG), HEX);
	Serial.print("ctrl_hum(0xF2): 0x");
	Serial.println(Sensor.readRegister(BME280_CTRL_HUMIDITY_REG), HEX);
	Serial.print("\n\n");
	Serial.print("Displaying all regs\n");
	uint8_t memCounter = 0x80;
	uint8_t tempReadData;
	for(int rowi = 8; rowi < 16; rowi++ )
	{
		Serial.print("0x");
		Serial.print(rowi, HEX);
		Serial.print("0:");
		for(int coli = 0; coli < 16; coli++ )
		{
			tempReadData = Sensor.readRegister(memCounter);
			Serial.print((tempReadData >> 4) & 0x0F, HEX);//Print first hex nibble
			Serial.print(tempReadData & 0x0F, HEX);//Print second hex nibble
			Serial.print(" ");
			memCounter++;
		}
		Serial.print("\n");
	}
	
	
	Serial.print("\n\n");
	
	Serial.print("Displaying concatenated calibration words\n");
	Serial.print("dig_T1, uint16: ");
	Serial.println(Sensor.calibration.dig_T1);
	Serial.print("dig_T2, int16: ");
	Serial.println(Sensor.calibration.dig_T2);
	Serial.print("dig_T3, int16: ");
	Serial.println(Sensor.calibration.dig_T3);
	
	Serial.print("dig_P1, uint16: ");
	Serial.println(Sensor.calibration.dig_P1);
	Serial.print("dig_P2, int16: ");
	Serial.println(Sensor.calibration.dig_P2);
	Serial.print("dig_P3, int16: ");
	Serial.println(Sensor.calibration.dig_P3);
	Serial.print("dig_P4, int16: ");
	Serial.println(Sensor.calibration.dig_P4);
	Serial.print("dig_P5, int16: ");
	Serial.println(Sensor.calibration.dig_P5);
	Serial.print("dig_P6, int16: ");
	Serial.println(Sensor.calibration.dig_P6);
	Serial.print("dig_P7, int16: ");
	Serial.println(Sensor.calibration.dig_P7);
	Serial.print("dig_P8, int16: ");
	Serial.println(Sensor.calibration.dig_P8);
	Serial.print("dig_P9, int16: ");
	Serial.println(Sensor.calibration.dig_P9);
	
	Serial.print("dig_H1, uint8: ");
	Serial.println(Sensor.calibration.dig_H1);
	Serial.print("dig_H2, int16: ");
	Serial.println(Sensor.calibration.dig_H2);
	Serial.print("dig_H3, uint8: ");
	Serial.println(Sensor.calibration.dig_H3);
	Serial.print("dig_H4, int16: ");
	Serial.println(Sensor.calibration.dig_H4);
	Serial.print("dig_H5, int16: ");
	Serial.println(Sensor.calibration.dig_H5);
	Serial.print("dig_H6, uint8: ");
	Serial.println(Sensor.calibration.dig_H6);
		
	Serial.println();
}
void presentation() {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo(SKETCH_NAME, SKETCH_MAJOR_VER "." SKETCH_MINOR_VER);
  // Register binary input sensor to sensor_node (they will be created as child devices)
  // You can use S_DOOR, S_MOTION or S_LIGHT here depending on your usage. 
  // If S_LIGHT is used, remember to update variable type you send in. See "msg" above.
  present(CHILD_ID_1, S_TEMP);  
  present(CHILD_ID_2, S_HUM);  
  present(CHILD_ID_3, S_BARO);  
}
void loop()
{
	//Each loop, take a reading.
	//Start with temperature, as that data is needed for accurate compensation.
	//Reading the temperature updates the compensators of the other functions
	//in the background.
/*	Serial.print("Temperature: ");
	Serial.print(Sensor.readTempC(), 2);
	Serial.println(" degrees C");
	Serial.print("Temperature: ");
	Serial.print(Sensor.readTempF(), 2);
	Serial.println(" degrees F");
	Serial.print("Pressure: ");
	Serial.print(Sensor.readFloatPressure(), 2);
	Serial.println(" Pa");
	Serial.print("Altitude: ");
	Serial.print(Sensor.readFloatAltitudeMeters(), 2);
	Serial.println("m");
	Serial.print("Altitude: ");
	Serial.print(Sensor.readFloatAltitudeFeet(), 2);
	Serial.println("ft");	
	Serial.print("%RH: ");
	Serial.print(Sensor.readFloatHumidity(), 2);
	Serial.println(" %");
	
	Serial.println();
	
	delay(1000);
*/
        double  temperature;
        double  humidity;
        double  pressure;
        
        temperature=Sensor.readTempC();
        humidity=Sensor.readFloatHumidity();
        pressure=Sensor.readFloatPressure()/100;
       send(msg1.set(temperature,2));
       send(msg2.set(humidity,2));
       Serial.print(humidity, 2);
       send(msg3.set(pressure,2));
     
     sleep(10000);
}```