Can a CiviRule trigger off a Contribution Custom Field entry?
Right now there is no trigger on custom data for a contribution. You could try though with the &quot;contribution is changed&quot; trigger and see if you can pinpoint your custom field/data with the &quot;field value comparison&quot; conditions?
Obviously you are quite welcome to either add the trigger yourself, or fund CiviCooP (or any other partner that is familiar with CiviRules) adding the trigger :-)