diff --git a/packages/graphql-zeus-core/TreeToTS/functions/new/resolvePath.ts b/packages/graphql-zeus-core/TreeToTS/functions/new/resolvePath.ts
index 245336ab..69a69a37 100644
--- a/packages/graphql-zeus-core/TreeToTS/functions/new/resolvePath.ts
+++ b/packages/graphql-zeus-core/TreeToTS/functions/new/resolvePath.ts
@@ -136,7 +136,16 @@ export const InternalArgsBuilt = ({
       // eslint-disable-next-line @typescript-eslint/no-unused-vars
       const [_, ...splittedScalar] = checkType.split('.');
       const scalarKey = splittedScalar.join('.');
-      return (scalars?.[scalarKey]?.encode?.(a) as string) || JSON.stringify(a);
+
+      if (scalarKey === 'UUID' && Array.isArray(a)) {
+        return `[${a.map((uuid) => scalars?.[scalarKey]?.encode?.(uuid) || JSON.stringify(uuid)).join(', ')}]`;
+      } else {
+        // Handling for other scalars
+        return (scalars?.[scalarKey]?.encode?.(a) as string) || JSON.stringify(a);
+      }
+    }
+    if (a === undefined) {
+      return 'ids: null';
     }
     if (Array.isArray(a)) {
       return `[${a.map((arr) => arb(arr, p, false)).join(', ')}]`;
diff --git a/packages/graphql-zeus-core/__tests__/uuid-test.spec.ts b/packages/graphql-zeus-core/__tests__/uuid-test.spec.ts
new file mode 100644
index 00000000..565bd534
--- /dev/null
+++ b/packages/graphql-zeus-core/__tests__/uuid-test.spec.ts
@@ -0,0 +1,68 @@
+import { ZeusScalars } from '@/TreeToTS/functions/new/clientFunctions';
+import { AllTypesPropsType, Operations, ReturnTypesType, ZeusArgsType } from '@/TreeToTS/functions/new/models';
+import { InternalArgsBuilt } from '@/TreeToTS/functions/new/resolvePath';
+
+// Define your scalars
+const scalars = ZeusScalars({
+  UUID: {
+    encode: (e: unknown) => String(`"${e}"`),
+    decode: (e: unknown) => e as string,
+  },
+});
+
+describe('InternalArgsBuilt function', () => {
+  let props: AllTypesPropsType;
+  let returns: ReturnTypesType;
+  let ops: Operations;
+  let vars: Array<{ name: string; graphQLType: string }>;
+
+  beforeEach(() => {
+    props = {};
+    returns = {};
+    ops = {};
+    vars = [];
+  });
+
+  it('should correctly encode UUIDs in a mutation input', () => {
+    const uuidArrayInput = {
+      ids: ['0170743b-6876-4ec2-839c-23480da37b28', '3ed80968-a077-4e43-9552-21ee8812f615'],
+    } as ZeusArgsType;
+
+    const arb = InternalArgsBuilt({ props, returns, ops, scalars, vars });
+    const result = arb(uuidArrayInput, 'someMutation.ids', true);
+
+    const expectedOutput = `ids: ["0170743b-6876-4ec2-839c-23480da37b28", "3ed80968-a077-4e43-9552-21ee8812f615"]`;
+
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should encode non-empty UUID arrays with consistent UUIDs', () => {
+    const uuid1 = '0170743b-6876-4ec2-839c-23480da37b28';
+    const uuid2 = '3ed80968-a077-4e43-9552-21ee8812f615';
+
+    const nonEmptyUUIDArrayInput = { ids: [uuid1, uuid2] } as ZeusArgsType;
+    const arb = InternalArgsBuilt({ props, returns, ops, scalars, vars });
+    const result = arb(nonEmptyUUIDArrayInput, 'someMutation.ids', true);
+
+    const expectedOutput = `ids: ["0170743b-6876-4ec2-839c-23480da37b28", "3ed80968-a077-4e43-9552-21ee8812f615"]`;
+
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should handle null input gracefully', () => {
+    const nullInput = { ids: null } as ZeusArgsType;
+    const arb = InternalArgsBuilt({ props, returns, ops, scalars, vars });
+    const result = arb(nullInput, 'someMutation.ids', true);
+
+    const expectedOutput = `ids: null`;
+
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should handle undefined input gracefully', () => {
+    const arb = InternalArgsBuilt({ props, returns, ops, scalars, vars });
+    const result = arb(undefined, 'someMutation.ids', true); // Pass undefined as input
+    expect(result).toEqual('ids: null'); // Expect the result to be 'ids: null'
+  });
+
+});