Hi Will, I am also a member of the Google Ads API team and let me provide support to your concern.
To answer your question, you can use the AdGroupCriterionService.MutateAdGroupCriteria to set a bid modifier between the association of the user list and ad group. Let me know if you have further questions. Regards, Reminder: Share your feedback about the Google Ads (AdWords) API! Take the 2021 Google Ads API and AdWords API Annual Survey Ernie John Blanca Tacata Google Ads API Team ref:_00D1U1174p._5004Q2R8ZuI:ref -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog: https://googleadsdeveloper.blogspot.com/ =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/xrst3000000000000000000000000000000000000000000000R2LKVJ004bEz8NAqTMKNVu_nt_MFnw%40sfdc.net.