diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f4f7fd7..c88b5278 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+### Changes:
+- Fix: Added configurable ApiKey and Environment parameters
+- 
 ### 2.12.17
 - Fix: fixed issue with shoe item recommended size
 
diff --git a/virtusize-core/src/main/java/com/virtusize/android/network/VirtusizeApi.kt b/virtusize-core/src/main/java/com/virtusize/android/network/VirtusizeApi.kt
index ccae7efd..4d153025 100644
--- a/virtusize-core/src/main/java/com/virtusize/android/network/VirtusizeApi.kt
+++ b/virtusize-core/src/main/java/com/virtusize/android/network/VirtusizeApi.kt
@@ -92,6 +92,14 @@ object VirtusizeApi {
         currentUserId = userId
     }
 
+    fun setApiKey(newApiKey: String) {
+        apiKey = newApiKey
+    }
+
+    fun setEnvironment(env: VirtusizeEnvironment) {
+        environment = env
+    }
+
     fun setStoreId(storeId: StoreId) {
         currentStoreId = storeId
     }
diff --git a/virtusize/src/main/java/com/virtusize/android/Virtusize.kt b/virtusize/src/main/java/com/virtusize/android/Virtusize.kt
index f2bd683b..d15a7596 100644
--- a/virtusize/src/main/java/com/virtusize/android/Virtusize.kt
+++ b/virtusize/src/main/java/com/virtusize/android/Virtusize.kt
@@ -1,6 +1,7 @@
 package com.virtusize.android
 
 import android.content.Context
+import com.virtusize.android.data.local.VirtusizeEnvironment
 import com.virtusize.android.data.local.VirtusizeError
 import com.virtusize.android.data.local.VirtusizeLanguage
 import com.virtusize.android.data.local.VirtusizeMessageHandler
@@ -79,6 +80,18 @@ interface Virtusize {
      */
     fun setUserId(userId: String)
 
+    /**
+     * Use this function to set up the apiKey in the app when the user changes country
+     * @param apiKey unique store Api Key
+     */
+    fun setApiKey(newApiKey: String)
+
+    /**
+     * Use this function to change API environment
+     * @param env unique API environment
+     */
+    fun setEnvironment(env: VirtusizeEnvironment)
+
     /**
      * Registers a message handler.
      * The registered message handlers will receive Virtusize errors, events, and the close action for Fit Illustrator.
diff --git a/virtusize/src/main/java/com/virtusize/android/VirtusizeImpl.kt b/virtusize/src/main/java/com/virtusize/android/VirtusizeImpl.kt
index 6212cc87..d32802c4 100644
--- a/virtusize/src/main/java/com/virtusize/android/VirtusizeImpl.kt
+++ b/virtusize/src/main/java/com/virtusize/android/VirtusizeImpl.kt
@@ -4,6 +4,7 @@ import android.content.Context
 import androidx.lifecycle.AtomicReference
 import com.virtusize.android.data.local.SizeComparisonRecommendedSize
 import com.virtusize.android.data.local.SizeRecommendationType
+import com.virtusize.android.data.local.VirtusizeEnvironment
 import com.virtusize.android.data.local.VirtusizeError
 import com.virtusize.android.data.local.VirtusizeErrorType
 import com.virtusize.android.data.local.VirtusizeEvent
@@ -318,6 +319,26 @@ internal class VirtusizeImpl(
         }
     }
 
+    /**
+     * @see Virtusize.setApiKey
+     */
+    override fun setApiKey(apiKey: String) {
+        VirtusizeApi.setApiKey(apiKey)
+        virtusizeViews.forEach { virtusizeView ->
+            virtusizeView.virtusizeParams.apiKey = apiKey
+        }
+    }
+
+    /**
+     * @see Virtusize.setEnvironment
+     */
+    override fun setEnvironment(env: VirtusizeEnvironment) {
+        VirtusizeApi.setEnvironment(env)
+        virtusizeViews.forEach { virtusizeView ->
+            virtusizeView.virtusizeParams.environment = env
+        }
+    }
+
     /**
      * @see Virtusize.registerMessageHandler
      */
diff --git a/virtusize/src/main/java/com/virtusize/android/flutter/VirtusizeFlutterImpl.kt b/virtusize/src/main/java/com/virtusize/android/flutter/VirtusizeFlutterImpl.kt
index a49bb8e1..3d5375ab 100644
--- a/virtusize/src/main/java/com/virtusize/android/flutter/VirtusizeFlutterImpl.kt
+++ b/virtusize/src/main/java/com/virtusize/android/flutter/VirtusizeFlutterImpl.kt
@@ -313,7 +313,7 @@ internal class VirtusizeFlutterImpl(
      */
     override fun setUserId(userId: String) {
         VirtusizeApi.setUserId(userId)
-//        params.externalUserId = userId
+        params.externalUserId = userId
         virtusizeViews.forEach { virtusizeView ->
             virtusizeView.virtusizeParams.externalUserId = userId
         }