Fix: wrong id parameter used in product variations

js/gtm4wp-woocommerce.js

@@ -509,9 +509,9 @@ function gtm4wp_woocommerce_process_pages() {
 
 		current_product_detail_data.price = gtm4wp_make_sure_is_float( current_product_detail_data.price );
 
-		current_product_detail_data.id = product_variation.variation_id;
+		current_product_detail_data.item_id = product_variation.variation_id;
 		if ( gtm4wp_use_sku_instead && product_variation.sku && ('' !== product_variation.sku) ) {
-			current_product_detail_data.id = product_variation.sku;
+			current_product_detail_data.item_id = product_variation.sku;
 		}
 		current_product_detail_data.price = gtm4wp_make_sure_is_float( product_variation.display_price );
 

readme.txt

@@ -5,7 +5,7 @@ Tags: google tag manager, tag manager, gtm, google, adwords, google adwords, goo
 Requires at least: 3.4.0
 Requires PHP: 7.4
 Tested up to: 6.5
-Stable tag: 1.20.1
+Stable tag: 1.20.2
 License: GPLv3
 License URI: http://www.gnu.org/licenses/gpl.html
 
@@ -224,6 +224,10 @@ to report micro conversions and/or to serve ads only to visitors who spend more
 
 == Changelog ==
 
+= 1.20.2 =
+
+* Fix: Wrong ID parameter used tracking product variations (id instead of item_id). Thanks [micmaf](https://github.com/micmaf)
+
 = 1.20.1 =
 
 * Fix: do not load GTM container when OFF and console.log OFF. Thanks [morvy](https://github.com/morvy)
@@ -900,6 +904,10 @@ Please report all bugs found in my plugin using the [contact form on my website]
 
 == Upgrade Notice ==
 
+= 1.20.2 =
+
+Bugfix release
+
 = 1.20.1 =
 
 Bugfix release