The SetCheckBox command sets the specified property of the given ScriptCheckBox. Unlike math and text containers, the SetActive command is not used as a precursor to this command.  Instead, the custom property of the checkbox is used to identify the checkbox to change.  If there is more than one checkbox with the same custom property, only the first found will be updated.

$\mathrm{with}\left(\mathrm{DocumentTools}:-\mathrm{Canvas}\right)\:$

mkvis := proc(canvas) local sc:=Script(); SetCheckBox(sc,"cb1","visible",true); ToString(sc); end:

mkinvis := proc(canvas) local sc:=Script(); SetCheckBox(sc,"cb1","visible",false); ToString(sc); end:

$\mathrm{cv}≔\mathrm{NewCanvas}\left(\left[\mathrm{ScriptCheckBox}\left(''check''\,\mathrm{custom}=''cb1''\right)\,\mathrm{ScriptButton}\left(''Make\; Visible''\,\mathrm{mkvis}\right)\,\mathrm{ScriptButton}\left(''Make\; Invisible''\,\mathrm{mkinvis}\right)\,\mathrm{ScriptCheckBox}\left(''distractor''\,\mathrm{custom}=''cb2''\right)\right]\right)\:$

$\mathrm{ShowCanvas}\left(\mathrm{cv}\,\mathrm{entrybox}=\mathrm{false}\right)$

The DocumentTools[Canvas][Script][SetCheckBox] command was introduced in Maple 2025.

For more information on Maple 2025 changes, see Updates in Maple 2025.