Hi Julian, I am using the same function within my flow. It seems that agreement records DO get generated every time, but the Output for agreementId stays NULL. 

Two suggestions: 1. you could adjust your Agreement Template to 'Auto-Send' this way you would not need the additional action to send for signature.

2. After the templateLoad action, you could do a Get Records to retrieve the ID of the newly created agreement (kind of a pain, but it should work).

I'm currently struggling with runtime variables. i am following the documentation and passing them from the action, but they are not showing up on the generated agreement. I wish there were better documentation for the more complex processes.