Service Now Catalog variables visibility only in task not on form

[aagnihotri]

How to make sure that the service catalog variables are visible only on the task but not on the form while a user is requesting a request ?  For eg I don't want the department part to come up while filling my form , but when I create my request task in that I can populate the department variable ?

[aagnihotri]

Hi sounds helpful i did that as i only want on my task . But when i update my task and change it to complete state and try visiting my task once again the department field  gets disappeared automatically . I cannot see any information if i visit again . I also set the condition such as the person requesting my task should not be empty as every task is opened by someone still when i update or complete my request things dis appear . I also tried catalog UI scripts for on change , on submit but still its not working .

[ramprasadk]

@aagnihotri 

Variable keep Global. Onload Hide the Variable. By using Catalog client script through you can build logic hide and show.