T70s not attacking when attack mcu is activated.

[=AKR=Sundial]

S!

 

My mission logic is as below:

 

player tank <-> proximity mcu: near 1400m -> activate + timer -> attack mcu (obj linked to t70s) -> TL to player tank;

^^^Mission logic above^^^

What happens when I test run is. T70s don't move at all they just sit on their spot. If I drive the tank forward they do attack but that's just default script action being activated. Is this normal? Should I use waypoint with low priority instead? 

Problem with using waypoint is I use the t70s death as trigger to advance the mission so all t70s should be killed. I fear some of them will just drive through player and cause mission freeze.