I'm trying to simulate a moving heat source in ANSYS workbench

In this answer https://www.researchgate.net/post/What_tool_should_be_used_to_model_a_moving_heat_source_in_Ansys Someone posted some code that looks like it could work.

What should I specifically do with that code? My only thought was to make a command block in the transient thermal solution but that doesn't seem to work.