Need Help! set gallery to show empty text field values

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Hi All, 

I need some help using the onselect property from gallery1, set a variable then navigate to a gallery2 and  setting the text field values in gallery2  to  blank/empty making gallery2 feel like a new form

Currently I can use the variable gallery1 to navigate to the gallery to edit/update fields from data pull from source. 

That formula on the items property of gallery2 is sort(Filter('Datasource', PRODUCT_ID = varProduct), PRODUCT_P, Ascending)

All the help is greatly appreciated.