How to place MT4 objects on the z-axis

Does anyone know please how to move an MT4 object (eg a vertical line representing a news event) on its z-axis?

With news events this can be a problem for example, when moving to the weekly time frame and all that week's news events are in the same place and it is impossible to see or select anything other than the top line without going in to the Object List.

The manual Draw Object as Background check box is not really enough if you have many objects.

OBJPROP_ZORDER would seem to offer a partial solution if you're willing to code but is apparently buggy: https://forum.mql4.com/61234#913875

Many thanks for any feedback.

I would like to know too

It's a mystery to me too, but in my case it's text and rectangles (for text background). I'm about to give up, even though I see countless of EA's that draw boxes on the chart, with text in the boxes, not hidden behind the boxes, and in my case I can't figure out how to display text in the boxes (in front), instead of appearing hidden behind the rectangles/boxes.