Hello,
You can either use the simpler `controls_repeat_ext` block and update i manually, or you can make a custom block and python generator to represent "for i in range".
Other people on this mailing list may be able to chip in with block definitions, if they've done this before.
The block that you are using can handle more complex looping behaviour, hence the function. There isn't a simple way to just cut that behaviour out.
Hope this helps,
Rachel