We're having trouble appending a unique id within the external survey link in email studio. Right now, we have the html set to a survey button:
%%[ Set @surveyButton = concat("[https://m.survey.bz/U75?I.Project=P2300782&ID=**YYYY**&smp=99&i.user1=3&i.user4=2&i.user3=2?]YYYY=", UniqueID) ]%%
Are we appending this unique id correctly? We're wanting to append the uniqueID in place of the "YYYY". Thank you in advance for the responses!