CLEARONREFRESH keyword
The CLEARONREFRESH keyword is supported in the data binding of components that are bound to variables: This allows you to specify that after a Refresh occurs, the variable to which the component is bound will be reset to NULL. Optionally, you can specify a value in the keyword parms, and the variable will be set to that value on refresh. Examples:
variables.TestVar(CLEARONREFRESH( ))
or
variables.TestVar(CLEARONREFRESH(CURDATE( )))