Expression Button component icon Expression Button

The Expression Button executes a Form Expression and stores the value in the Value variable. For more information please refer to the Flowable Forms section.


Group Name Description



This is a unique id for the component.


The label attribute adds a label to the component, if not empty.

Button text

The text rendered within the button. You can also use expressions (for example, 'click here to go to {{name}}').


Model where the result is saved.


The description attribute additionally adds a description to the component.


If true the component is hidden and the value is not part of the payload.


Boolean value or expression specifies whether the component is visible or hidden. This expression might include another value in the same form, for instance, use a checkbox bound to {{showAdditionalFields}} and use the very same expression as the visible attribute to show or hide the component according to the checked state of the checkbox. If you want only to show the component, if the form is not used as the init-form, you can use the expression {{}} which evaluates to true only, if there is a current id which is not the id in a start form.


A Boolean value or expression specifies whether component is enabled or disabled.

Expression button


The expression executed to save the result into the button value.

Refresh time

The interval (in milliseconds) to execute the button automatically. If it is not defined it does not executed automatically.

Auto execute

Auto executes the button when rendered.

Common button

Button alignment

The alignment of the button, either 'Left' or 'Right'.

Icon URL

The URL of the icon to show.

Icon alignment

The alignment of the icon, either 'Left' or 'Right'.



Documentation intended to explain concepts of its use for future reference.


Style class

Stylesheet class name. Add any style classes to be applied to the component for the desired styling and rendering.