i am assiging image to iconurl in mapmarker but it is not getting displayed on map. 

You need to provide additional information:

  1. What version of the platform (and Service Studio) are you running?
  2. What are the steps to reproduce your issue (or attach an OML that includes a simple repro)?
  3. What steps have you taken to troubleshoot? 

https://itnext.io/outsystems-how-to-1-2c677f7efb8d