yes, if it's for a Pyplug just use the TimeOffset inside the TimeLoop Pyplug, you can safely replace links by numbers.
You'll have the error message , but the expression should work fine.
The expression is a bit hackish but that was the best way I found to do that :
range(0,frame,10) : return a list ranging from frame 0 to current frame incremented by 10 frame (ex : 0,10,20,30,40)
.pop(-1) get the last item of the list
it's a bit tricky but that work
Hope that's will help you to make thinks a bit clearer...