Select text question

[Graham Samuel]

I want a user to key a number in a field in an iOS app. Normally the field will already contain data which the user will be replacing, so I coded this

on openField
   set the keyboardType of me to "numeric"
   select text of me
end openField

What happens is that the selection can be seen taking place briefly (this is in the Simulator) and then reverts to a flashing cursor with the original data still in the field and no selection shown. (The numeric keyboard does open BTW, but I can’t see that as relevant).

What did I do wrong?

Graham