# Tooltips

You can use the evaluator to generatge the tooltip for a toolbar button dynamically.

Unlike [icons](icons) and [labels](labels), there's no @ modifier for tooltips - instead, you enter a `=` character followed by the evaluation expression, directly into the tooltip field in the button editor.

![](https://github.com/Chaoses-Ib/DirectoryOpus/blob/main/Manual/evaluator/applicable_contexts/functions/page%3Estandard_variables\&nodate\&nouser\&nofooter)

The return value from the evaluation expression will be used as the tooltip for the button.
