Transition expression verification

If the expression fails to verify, the

Unverified Indicator

is shown next to the transition name. There are two reasons a transition expression will not verify.

Expression contains a term that is not a tag

For example, if you have configured

Tag1

through

Tag10

, the expression

Tag11>3

fails to verify because the value

Tag11

is not configured and cannot be interpreted as a number.

Expression evaluates to a non-Boolean value

For example, if you have an expression of the Boolean type, the value

1

verifies because it is evaluated as

TRUE

. The expression

Hello World

does not verify because it does not evaluate to a Boolean value.

Tag1

verifies if

Tag1

is a configured tag of type Boolean, but

Tag2+1

does not verify because its result cannot be interpreted as a Boolean value.