There are different ways to do this. You would use a custom validation script (bring up the field properties, select the Validation tab and select a custom validation script). This could would check for the substring "V1":
var n = event.value.indexOf("V1");
if (n == -1) { // substring not found
app.alert("Does not contain V1");
event.rc = false;
}
else {
event.rc = true;
}
Karl Heinz Kremer
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