Can't make calculations, tokens are not properly resolved

Hello,

I'm not sure if it's because of ECA Tamper or BPMN.iO Modeler but can't make calculations using the following setup ECA 3.0.6; ECA Tamper 2.0.5; Tamper 8.x-1.0-beta1; Modeler API 1.0.4; BPMN.iO Modeler 3.0.2; Drupal 11.2.4; php 8.3.26.
Tokens are not properly resolved in the "Value" field of Tamper's Math offcanvas. Having a number there it woks.

Thank you!