-4422 You may not use a CONSTRUCT statement within another INPUT statement.
This includes situations when CONSTRUCT is enclosed within a conditional or
looping statement. You must call a function that executes the CONSTRUCT
statement.
You can execute a CONSTRUCT statement from within an INPUT statement,
but in order to do so you must place the CONSTRUCT statement in a
function and call the function. You cannot embed the text of a
CONSTRUCT statement in an INPUT statement.
