Interactive Mode Simulation : Input Changes : Invalid Input to Do Action

Invalid Input to Do Action

The input to Do Action cannot be any of the following:

A syntactically invalid action expression.

For example, the expression “i=5” and “st(A)”. These are a condition and an event, respectively.
An action which is semantically incorrect since it uses an element contrary to its type.

For example, if d then A end if, where d is defined as a data-item and not as a condition.
An action that refers to an item defined in your WorkArea but not uniquely identified.

For example, the input j:=5 where j is defined as a data-item in a number of different charts. You must specify which chart is being referenced.
An action that refers to an element not belonging to your WorkArea.

For example, the input i:=5 where i is neither defined nor referenced in the charts in your WorkArea.