You shoud use RELEASE() method.

FOR i = 1 TO _screen.<b>FormCount</b>
  IF UPPER(ALLTRIM(_screen.forms[i].name)) = 'SEARCH'
    _screen.forms[i].<b>RELEASE()</b>
  ENDIF
ENDFOR

* or
FOR Each loForm IN _screen.Forms
  IF UPPER(ALLTRIM(loForm.name)) = 'SEARCH'
    loForm.RELEASE()
  ENDIF
ENDFOR

>I'm sure this is one of the really easy things to do and somebody here could readily point out the correct method of doing this.
>
>I'm trying to check for the existence of a second form (search) on the screen upon destroying another form, so in the destroy method of form1 I put the following:
>
>FOR i = 1 TO _screen.ControlCount
> IF UPPER(ALLTRIM(_screen.forms[i].name)) = 'SEARCH'
> _screen.forms[i].DESTROY()
> ENDIF
>ENDFOR
>
>This doesn't work. How can I achieve the desired result?
>
>Thanks in advance!
>
>Andrew