I built a container which I populate with a number of checkboxes depending on a certain table.
To do that i removeobject all the checkboxes in the container, then addobjects again reading the table.

I tried with

for each oCheck in this.Mycontainer.objects
    if lower(oCheck.baseclass) == 'checkbox'
       this.removeobject(oCheck.name)
    endif 
endfor 

but i found out that one of the objects was not removed
so i'm using this code

for i = this.mycontainer.controlcount to 1
    if lower(this.mycontainer.controls(i).baseclass) == 'checkbox'
       this.mycontainer.removeobject(this.mycontainer.controls(i).name)
    endif 
endfor 

why that ?