diff --git a/gmsui/transactions/internal.go b/gmsui/transactions/internal.go
index 50398a1..37854bd 100644
--- a/gmsui/transactions/internal.go
+++ b/gmsui/transactions/internal.go
@@ -365,6 +365,8 @@ func (txb *Transaction) resolveFunctionArguments(inputArguments []interface{}, r
 				unresolvedParameter.Objects[idx] = UnresolvedObject{Mutable: false, ObjectId: inputArguments[idx].(string)}
 			case reflect.TypeOf(types.SuiMoveNormalizedType_MutableReference{}):
 				unresolvedParameter.Objects[idx] = UnresolvedObject{Mutable: true, ObjectId: inputArguments[idx].(string)}
+			case reflect.TypeOf(types.SuiMoveNormalizedType_Struct{}):
+				unresolvedParameter.Objects[idx] = UnresolvedObject{Mutable: false, ObjectId: inputArguments[idx].(string)}
 			default:
 				return nil, fmt.Errorf("function parameter [%v] is not supported at index %d", reflectParameter.Type(), idx)
 			}
@@ -427,7 +429,7 @@ func objectResponseToObjectArg(data *types.SuiObjectResponse, mutable bool) (*su
 		}
 	default:
 		// Other object: set the version and digest
-		objectRef, err := ObjectStringRef{ObjectId: data.Data.ObjectId, Version: data.Data.Version, Digest: data.Data.Digest}.toObjectRef()
+		objectRef, err := ObjectStringRef{ObjectId: data.Data.ObjectId, Version: data.Data.Version, Digest: data.Data.Digest}.ToObjectRef()
 		if err != nil {
 			return nil, fmt.Errorf("can not convert object ref: %v", err)
 		}
diff --git a/gmsui/transactions/object_ref.go b/gmsui/transactions/object_ref.go
index fb8b86c..d17ce48 100644
--- a/gmsui/transactions/object_ref.go
+++ b/gmsui/transactions/object_ref.go
@@ -14,7 +14,7 @@ type ObjectStringRef struct {
 	Digest   string `json:"digest"`
 }
 
-func (ref ObjectStringRef) toObjectRef() (*sui_types.ObjectRef, error) {
+func (ref ObjectStringRef) ToObjectRef() (*sui_types.ObjectRef, error) {
 	objectId, err := sui_types.NewObjectIdFromHex(ref.ObjectId)
 	if err != nil {
 		return nil, fmt.Errorf("can not create object id from hex [%s]: %v", ref.ObjectId, err)
@@ -32,5 +32,5 @@ func (ref ObjectStringRef) toObjectRef() (*sui_types.ObjectRef, error) {
 }
 
 func coinStructToObjectRef(coin types.CoinStruct) (*sui_types.ObjectRef, error) {
-	return ObjectStringRef{ObjectId: coin.CoinObjectId, Version: coin.Version, Digest: coin.Digest}.toObjectRef()
+	return ObjectStringRef{ObjectId: coin.CoinObjectId, Version: coin.Version, Digest: coin.Digest}.ToObjectRef()
 }