diff --git a/entity/Offer_entity/Offer_entity.aod b/entity/Offer_entity/Offer_entity.aod
index a5e954badf21f6d01a0656b6d78f039c397a88a7..1edca325613c32476ad13c1158c54a8bf9fecaf5 100644
--- a/entity/Offer_entity/Offer_entity.aod
+++ b/entity/Offer_entity/Offer_entity.aod
@@ -79,6 +79,7 @@
       <columnName>RELATION_ID</columnName>
       <caption>Contact / Company</caption>
       <mandatory v="true" />
+      <onValueChange>%aditoprj%/entity/Offer_entity/entityfields/relation_id/onValueChange.js</onValueChange>
     </entityField>
     <entityField>
       <name>SALESPROJECT_ID</name>
diff --git a/entity/Offer_entity/entityfields/relation_id/onValueChange.js b/entity/Offer_entity/entityfields/relation_id/onValueChange.js
new file mode 100644
index 0000000000000000000000000000000000000000..5aa3b55ed5886a44b307aef36a896c0dfddcaa12
--- /dev/null
+++ b/entity/Offer_entity/entityfields/relation_id/onValueChange.js
@@ -0,0 +1,10 @@
+import("system.vars");
+import("system.db");
+
+var relid = vars.get("$local.value");
+if(relid != "")
+{
+    var relData = db.array(db.ROW, "select LANGUAGE from RELATION where RELATIONID = '" + relid + "'");
+    
+    vars.set("$field.LANGUAGE", relData[0]);
+}
\ No newline at end of file