Some question ;/ about custom map

[Roman9441]

I'm try to download and do what exactly you guy ask me to do

put the file THEATRE OF WAR 3 KOREA SCENARIO
into the missions but when i'm enter the game the campaing working fine

but the problem is i can't press the buttom battle it keep black and i want to try some new missions

any idea because i'm just purchased the game from the gamersgate or do i need to finish campaing or something first because i want to try the mission from DMP it look interesting for me anyway

Thank for the help is anyone can help me why battle buttom in game keep black and i can't use it