Is there a command to toggle checked/unchecked in checkbox mode as {SPACE}?

In checkbox mode, we click a file, then we can press SPACE key to toggle checked/unchecked status of that file, and this operation will not affect the checked status of other files.

Now I want to use AHK script to do it, some code like:
space & c::dopusrt.exe /cmd select checked=toggle
but I cannot find a command like this.
"Select TOCHECKS" will cause other unselected files to be unchecked.
I need help, please...

Probably easier to make AHK send a keypress of the space key if that's what you want to trigger.

But I have use SPACE as sequence key, such as:
SPACE,SPACE =========== Select FIRST EXACT MAKEVISIBLE=immediate
SPACE,1 =========== Set SORTBY=name
SPACE,2 =========== Set SORTBY=modified
...

So using AHK to sendinput {space} will trigger these sequence key leading with SPACE.
I hope there is such a command in DO for calling from outside.

Or, is there some message number in DOpus to do the toggle ? So that we can use AHK's "SendMessage" like this:
SendMessage 0x0114, 1, 0, ControlGetFocus("A")