Question regarding WipeClouds transition

Hello,

I have a question about this plugin or transition, how do I change the direction? Unfortunately, nothing has changed at Grad Angle.
The clouds are blowing to the right, but I need it to go left.
https://borisfx.com/support/documentation/sapphire/sparks/wipeclouds/

Thanks a lot for the help!
Best regards,
Raffaela