John, the first character of the key value in the tree view must be a character value. If the first number is numeric, the activeX control evaluates the value as numeric and throws an error.

What I do is prefix my key values with a '_' (underscore), which is ok with the tree view control as a character value. Then in the nodeclick method, I just strip off the underscore character and process the rest of the key as the value I am looking for.

Hope that helps.

P.S. when I get more detailed, I prefix the headers (the higher nodes) with '_z_' + value, and the child nodes (the actuall value the user is looking for) with '_x_'. Then in my nodeclick method, I do a;

IF (LEFT(node.key), 3) = "_x_"
* must be a record.
... search for record, enable buttons, or whatever.
ELSE
* must be a header.
... disable buttons.

END


Rob.