Problem with TFT32_L (no replies)

HI,
I have been successfully using a FLSun Cube 3D printer with TFT32_L V3.0 for a long time.
After modifying the "configuration.h" file of the Marlin firmware to be able to use a Cyclops Hotend and loading it on the MKS gen L V1.0 motherboard, I can't longer modify the hotend temperature from the TFT display.On the other hand.
I can modify the other parameters such as the bed temperature and the extrusion and printing speed percentages during a print.
Where am I wrong? Do I need to change any parameters?

Thanks for the reply.

claudio