Enable manage stock and product qty 1

Hi,

For all products I am trying to enable manage stock and set Stock Qty to ‘1’ as per following screenshot.

https://snipboard.io/bZ40Kz.jpg

I have tried following code but it is not working

add_filter( 'wcfm_product_fields_stock', function( $stock_fields, $product_id, $product_type ) {
	if( !$product_id ) {
		if( isset( $stock_fields['manage_stock'] ) ) {
			$stock_fields['manage_stock']['dfvalue'] = 'enable';
		}
		if( isset( $stock_fields['stock_qty'] ) ) {
			$stock_fields['stock_qty']['value'] = 1;
		}
		if( isset( $stock_fields['sold_individually'] ) ) {
			$stock_fields['sold_individually']['dfvalue'] = 'enable';
		}
	}
	
  return $stock_fields;
}, 50, 3 );