-- card: 13420 from stack: in.0 -- bmap block id: 0 -- flags: 0000 -- background id: 3797 -- name: -- part contents for background part 1 ----- text ----- From: Jakob Nielsen Tech Univ of Denmark Date: Tue, 05 Jan 88 02:37:54 DNT What is a good way to test if the contents of a field is an integer ? I want to do input validation to protect my users from getting strange error messages later in a HyperTalk program. One alternative would be to trap HyperCard's error messages (how does one do that) - perhaps after having multiplied the field with one just to see whether it is in fact a number. -- part contents for background part 45 ----- text ----- Input validation   (test if input is numerical)