I am trying to have a dollar sign image show up on another field called stage_indicator__c whenever "delivered" from the stage picklist is chosen.Whenever other value is chosen from the picklist, I want it to be blank. My current formula isnt working. Any thoughts on where i'm going wrong? Im pretty new to this. 

IF(ISPICKVAL(Stage_Name__c, "Delivered"),"IMAGE("/servlet/servlet.FileDownload?file=015A0000003mNPL","")
 

I am trying to have a dollar sign image show up on another field called stage_indicator__c whenever "delivered" from the stage picklist is chosen.Whenever other value is chosen from the picklist, I want it to be blank. My current formula isnt working. Any thoughts on where i'm going wrong? Im pretty new to this. 

IF(ISPICKVAL(Stage_Name__c, "Delivered"),"IMAGE("/servlet/servlet.FileDownload?file=015A0000003mNPL","")