Ai workers do not in mining

[balance21]

Hello friends,I meet new problems in Ai scripts and need ur help,especially in dealing with Ud and Ne.I tested 3 computers (all race of ud or ne )running with the same Ai script,but just some of their workers were mining automatically,most time on the third computer's workers.I guess they were thinking their lives maybe.I've found many solvations in chinese web(i'm chinese hh dear foreigners) while none of them were right.
ps:The workers can still build in schedule.