Now I can only add them one by one like
'push back p0.uid on xais'
'push back p1.uid on xais'
'push back p2.uid on xais'
We know the for expression wont work for a instance name.
So I have no idea to deal with how to get a dyamic instance name.
we know,the expression like ("p"+0).uid is just Syntax error.
But other language like as3 could use this["p"+0].
That will be great convenient.