reaper.SetTakeMarker() - sets no marker

The code below should set a take (media item)-marker at the edit cursor position. However - it appears, it does not. Code:

You try to set a take-marker with the index -1 which is an invalid index. It must be 0 for the first take-marker, 1 for the second, etc. Edit: you should also set the optional parameter source-position, or Reaper will not know, where to add it. Code:

Looks like you need to specify the time where you want to insert it: Code:

No, your code will not work, at least not in the way the OP wanted. The OP wants to add a take-marker at edit cursor position. You need to translate that edit-cursor-position to the source-position before you could use it in SetTakeMarker. It's easy if the take has no stretch-markers. In that case, you just calculate edit_cursor_position-item_start. However, it is impossible to calculate properly, as soon as you have stretch-markers in the item, as they put the take-position all over the place. So the only reliable way to do it isn't using SetTakeMarker, only the action. But yes, the missing bit was the position, which unfortunately doesn't help solving the problem... Edit: corrected my post above accordingly

Hence I played god and striked me down...ehrmm..my code actually... :D