Wait actions doen't work in Markers

[thsauve]

Hello,

In a Reaper project, I'm trying to make an automatic "Pause Wait Play".
To do so, I inserted a marker whose name is "!1008 2011 1008" (see "Marker 1008 2011 1008.png").
When I play my project, the action 2011 (wait 5 seconds before next action) is not interpreted. It just do pause and play.

So I created a custon action who chains 1008 + 2011 + 1008 actions (see "Custom action.png").
When I insert a marker whose name is "!" + my custom action id : it works.

To be sure I tried !1008 2011 1008", "!1008 2011 1007" and "40073 2011 40073" : none of them worked ...

Did I do something wrong ?

I user Reaper v6.83 with SWS Extensions 2.13.2.
Thank you in advance.