>I have the following code. When run subsequently, it errors on the AddObject line
>because the cntProperty container is not being removed. It dissappears from the screen
>but the object reference still exists:
>
>

>	.RemoveObject('cntProperty')
>
>	** Determine which property container to add
>	DO CASE
>
>		CASE ThisForm.cClassType='E' AND ThisForm.cCategory= 'R'
>			cClassName = 'cntProperty_RE'
>
>		CASE ThisForm.cClassType='E'
>			cClassName = 'cntProperty_E'
>
>		CASE ThisForm.cClassType='L'
>			cClassName = 'cntProperty_L'
>
>		CASE ThisForm.cClassType='M'
>			cClassName = 'cntProperty_M'
>
>		CASE ThisForm.cClassType='P'
>			cClassName = 'cntProperty_P'
>
>		CASE ThisForm.cClassType='S'
>			cClassName = 'cntProperty_S'
>
>		CASE ThisForm.cClassType='C' AND ThisForm.cCardType = 'S'
>			cClassName = 'cntProperty_B'
>
>		CASE ThisForm.cClassType='C'
>			cClassName = 'cntProperty_C'
>
>	ENDCASE
>
>	** Add the new property container
>	.AddObject('cntProperty', cClassName)
>
>

You cannot completely remove an object defined at the class level - it will go .null., but the reference will still be there. You need to add the object at runtime, then it can be removed.