Structural De-ice in air file

Hello everyone,does anybody know which entry must be present in an air file (*.air), to have structural de-ice enabled on a piston engine?I tried endless hours to implement structural de-ice onto the Alphasim Caribou without success.Structural de-ice (wing anti-ice ?) works perfect on the Milton Shupe Beech 18 and can be observed with AFSD. For testing i used the B18 airfile on my modded Caribou panel (put an anti-ice switch in here) and it works, but the Caribou can´t be flown with the B18 air file.Any help here would be niceThxRon