Thank you for your help,
without you i would have never thought about this!
I am posting a picture below in case some fellow Unreal user needs this in future.
Although this works, it was kind of impossible to figure out without you guys showing us way so i would like to take this opportunity and make a workflow suggestion to as a everyday user of Paper2d.
I believe that we should have a looping TRUE/FALSE tickbox inside flipbook editorso system would automatically know if this is one time only.I believe it would make more sense that way to a newcomer and it would look a bit cleaner.
you ROCK!