Randy,

If both the combobox and the optiongroup are inside the same "container", the page in your case, use this.parent.txtOption.Enabled = .f.

FWIW, txt is usually used as an identifier for TextBox objects. opg is used for OptionGroups. The help file lists these in the Naming conventions topic.

>Hi... I am working with VFP6 and want to disable an (entire) option box from the click event of the Combo Box right before it.
> Having trouble with the syntax. thisform.txtOption.disabled=.t. gives me an error message that my option group could not be found.