Gravity Forms field entries into wp_query loop [closed]

On gform_after_submission save the gform entry in post meta.

update_post_meta( $entry["post_id"], '_gform_submission_18_entry_13', $entry[13] );

In your template:

new WP_Query( array( 'post_type' => get_post_meta( get_the_ID(), '_gform_submission_18_entry_13', true ) ) );