How to Repaint FMX Android components in Form in C++Builder 10.4?


I wrote a very simple FMX Adroid App, the function is:
Show Form 2 then write something to record(include title and detail text),
close Form 2 to Main Form, then make a checkbox in Main Form with the title we just recorded in Form 2.
if user check the checkbox, then press "del" buttn then delete the record file and checkbox.
the problem is:
when closed Form 2 and in MainForm::OnActivate we can add a new checkbox for the record.
if we checked checkbox then clicked delete, free the pointer of checked checkbox, the checkbox still in main form until I reopen the APP.
I tried:
Still can’t work
does anyone know what’s going on ? why FMX TForm member has no "Repaint()" or "Update()" "Refresh()" ? just like VCL has.

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