Hi @Shinu
Welcome to our UiPath Forum!
You can edit your arguments in the Properties of the Invoke Workflow activity here:
Import arguments button is there for you to quickly import arguments from the Workflow. To use it properly, you would do this:
- Add arguments in the target workflow
- Add Invoke Workflow activity and point to that workflow
- Click Import Arguments to automatically import arguments. If you have variables with the same names in the ‘top’ workflow, then those will be automatically assigned to the arguments