Is there any way to skip after effects warning while wrong expression is applied?

when I use script to apply a new expression to a property,after effects warning will come out if the expression is wrong.I what to skip the warning

I found some infomation about autoFixExpressions(),but it seems that if the expression is totally wrong,such as "sdfsdfsdfsdf",the autoFixExpression wound be useless.I used try{}catch(){},but it did not work,either.

By the way,can I apply an expression and meanwhile set the expressionEnabled to false,so after effects wound't eval the expression?

I spent a lot of time with these problems but without any result,help will be appreciated.