Hi Mike.

I then have added three properties to my form cALIAS, cFIELD and cTAG. In the Init of my form I say:

this.calias = "REPFILE"
this.cfield = "REPORTNO"
this.ctag = "REPORTNO"

Why? These are already properties of the search textbox class and there is code in the class to handle them. But they need to populated. Don't populate your form properties. Populate those properties of the incremental search text box.

It seems that this.calias and this.cfield have no values.

See my comments above < s >

Do I have to set these values somewhere else other than Init?

Set them right in the property sheet.