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Dynamically update the image of a catalog item

 see

https://community.servicenow.com/community?id=community_question&sys_id=a7fa73aedb6feb409a64e15b8a9619a7



https://community.servicenow.com/community?id=community_question&sys_id=6dcf0f65dbdcdbc01dcaf3231f961989



https://community.servicenow.com/community?id=community_question&sys_id=8f26ec0bdb3fa34414d6fb24399619f5

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