Symbols with text input

Hi all,

I am looking for a setup that makes you insert text into a symbol when you place it on the drawing.

An example would be if I want to insert a weld symbol for a fillet weld,
then I want to set it up so that after you have placed the weld symbol on the drawing,
a dialog box appears and you can insert the value to be used in the symbol.
An idea her would be to just set it up with the usage of an !!Alert.input() box for the input-value, if possible.

Typical flowchart for operation:

STEP 1 - INSERT SYMBOL


STEP 2 - POP-UP FOR WELD SIZE


STEP 3 - INPUT FROM POP-UP USED AS TEXT





Anyone have any tips for this, or can point me in a direction for this ??