Select All for Geoprocessing Widget on WAB

[Anonymous User]

Hello, 

Is there any way to make the Geoprocessing widget on WebAppBuilder Select All instead of manually selecting each item from the "Layers to Clip". Let's say you have 20 plus layers and can get tedious to select each one manually each time you want to extract data. Please advice.  Thank you very much in advance. 

Best,

Mohammed