Hey guys, I have already made my campaign and it's working fine. Moreover, aircrafts' squadrons with UpgradeType=ANY did respond to the command, but I can't upgrade my mig 21 for a weird reason.
All aircrafts here has the name of their respective folder in object/aircraft, and that's the same case with texture as it has got the same folder's name. So, I don't really get the idea why it's not working should I gave it it's ingame texture name or use the texture folder's name (which I am already using) ? Or is there is something wrong with the command as it's under the missions types' commands not above it? Thanks for your help in advance.