Fix exclusive locks for Create and Replace calls. (#73)

Author: HarryCordewener

Core.Arango/Modules/Internal/ArangoDocumentModule.cs

@@ -66,7 +66,7 @@ public async Task<List<ArangoUpdateResult<TR>>> CreateManyAsync<T, TR>(ArangoHan
                 parameter.Add("mergeObjects", mergeObjects.Value.ToString().ToLowerInvariant());
 
             if (exclusive.HasValue)
-                parameter.Add("exclusive", mergeObjects.Value.ToString().ToLowerInvariant());
+                parameter.Add("exclusive", exclusive.Value.ToString().ToLowerInvariant());
 
             if (returnOld.HasValue)
                 parameter.Add("returnOld", returnOld.Value.ToString().ToLowerInvariant());
@@ -324,7 +324,7 @@ public async Task<List<ArangoUpdateResult<TR>>> ReplaceManyAsync<T, TR>(ArangoHa
                 parameter.Add("returnNew", returnNew.Value.ToString().ToLowerInvariant());
 
             if (exclusive.HasValue)
-                parameter.Add("exclusive", returnNew.Value.ToString().ToLowerInvariant());
+                parameter.Add("exclusive", exclusive.Value.ToString().ToLowerInvariant());
 
             if (ignoreRevs.HasValue)
                 parameter.Add("ignoreRevs", ignoreRevs.Value.ToString().ToLowerInvariant());