change back to support custom data types

src/variable.go

@@ -275,7 +275,13 @@ func setVariableValue(v setVariable, stack stack, stacklevel int) (any, ArErr) {
 			case ArObject:
 				if _, ok := y.obj["__setindex__"]; ok {
 					callable := y.obj["__setindex__"]
-					builtinCall(callable, []any{key, resp})
+					_, err := runCall(call{
+						callable: callable,
+						args:     []any{key, resp},
+						line:     v.line,
+						path:     v.path,
+						code:     v.code,
+					}, stack, stacklevel+1)
 					if err.EXISTS {
 						return nil, err
 					}