To shoot windows you have to add this line into the OnBotJoin function:
bot.TargetBreakableDist = 90.0;
New scripts already have that line, then just delete //~
You can use regular expressions .* to enable all MOUNTMG42 and REPAIRMG42 goals:
SetAvailableMapGoals( TEAM.AXIS, true, ".*MG42_.*" );