I'm attempting to input the following exclusion script on a triggered send in Marketing Cloud. However, whenever I attempt to do so, the exclusion script will not save. I'll click 'Save' and then 'Publish Changes', but the triggered send does not show the exclusion script attached to it. Is there a step I'm missing? My understanding was that you could just type the exclusion script into that area in a triggered send. Exclusion script is:
ROWCOUNT(LOOKUPROWS("Smart_Alerts","EMAIL_ADDRESS", EMAILADDR))>0