Hi,
in detail_cr form at runtime you can only do it with JS/JQuery
For example:
function showcustomfield() {
if(_dtl.edit)
{
jQuery("[pdmqa='yourfield']").show(); //Value
jQuery("label:contains('yourfieldheader')").closest('th').show(); //Show Header
}
}
Attach the event. onBlur means it fires when you leave the Field or you can try OnChange. You will find it in all forms.
<PDM_MACRO name=dtlTextbox hdr="Urgency" attr=urgency evt="onBlur=\\\"showcustomfield()\\\"">
<PDM_MACRO name=dtlTextbox hdr="Impact" attr=impact evt="onBlur=\\\"showcustomfield()\\\"">
Hide:
jQuery("[pdmqa='yourfield']").hide();
jQuery("label:contains('Header')").closest('th').hide();
document.main_form.elements["SET.yourfield"].value = "";
Untested.