How to combine values from multiple Gravity Forms fields into one other column

If you need to combine values from multiple Gravity Forms fields into one other column, follow these steps:

Create the Fields:

Create three fields, for example, line1, line2, and line3.
Create another field, such as Multiple lines, and make this field hidden in Fields settings -> Appearance -> Advanced.

Map the Combined Field:

When creating a Dataverse Feed, map the Multiple lines field to the necessary column to get the combined value.

Add this code example to your functions.php file:

add_action( 'gform_pre_submission_{your_Gravity_Form_id}', function ( $form ) {
    $_POST['input_{Multiple_line_Id}'] = rgpost( 'input_{line1_Id}' ).'; '.rgpost( 'input_{line2_Id}' ).'; '.rgpost( 'input_{line3_Id}' );
});

add_action( 'gform_pre_submission_2', function ( $form ) {
    $_POST['input_5'] = rgpost( 'input_1' ).'; '.rgpost( 'input_2' ).'; '.rgpost( 'input_3' );
});

Explanation:

Replace {line1_Id}, {line2_Id}, and {line3_Id} with the actual field IDs from your Gravity Form (you can find these in Fields settings).
Replace {your_Gravity_Form_id} with the actual Gravity Form ID.
The rgpost function retrieves the values from the specified fields.
The combined value is then assigned to the target field using the $_POST superglobal.