Let's say I have prepared bpmn20.xml file with process, where one of tasks has defined simple form, so In the Eclipse designer in the properties of the task in "Form" section I added few textfields in the form. Then I upload this deployment to Activiti Explorer. Is it possible when the form for the task is shown - to fill these textboxes by values which could come from external system for example Web Service Method? Let's say the process is started with some variables, and then when form is shown these variables are used as parameters for method of some external webservice which returns some value, and this value is put to the text box of the form. Is such scenario possible? If so then How to achieve it ?