GravityActions: How to show hidden inputs

In GravityActions, hidden inputs in the Gravity Forms form are not displayed by default. 

For example, if you have an Address field and you have the Country input hidden, the Country input will not be shown in GravityActions:

If you would like to show all inputs, regardless of whether they are shown in the Gravity Forms form, add this code to your site (not sure how? Follow these steps.):

add_filter( 'gk/gravityactions/hide_hidden_inputs', '__return_false' );