# Handshake connection

The application reads the value of this connection at the data source, and resets the button to its unlatched state when this connection changes to meet the conditions of the latchResetType attribute.

A read connection. You can assign a tag or an expression to this connection. If you assign an expression, the application calculates the value of the expression and resets the button to its unlatched state when this connection changes to meet the conditions of the latchResetType attribute.

The latchedButton graphic object element's connections element contains this connection element.

## See also

connections and connection elements

latchResetType attribute