How to know if a standard form command is successfully executed in Extension Modeler?

I am using Extension Modeler type Session. I added a standard form command in order to implement something after a standard form command is executed without any error, but the point is that I don't know how to check if the standard form command is error or not. Is there anything like a variable or function to check for such result?

For example, Clicking putaway in Warehouse Receipt session (whinh3512m000) and expect it to putaway. After it is done, I want to implement something for this condition. If it has any error or putaway is not success, then I want to do something else.

I only found Before Command and After Command for the available Hooks but these hooks alone cannot get the job done.

Any help is appreciated.