Troubleshooting: Fixing an Error In Add Lead to Campaign (Smartlead) Step

Hey team, my Add Lead to Campaign (Smartlead) step keeps erroring because one of the fields was a number type. But I’ve switched it to text and I’m still getting this error:

{"statusCode":400,"error":"Bad Request","message":""lead_list[0].phone_number" must be a string","validation":{"source":"body","keys":["lead_list.0.phone_number"]}}