In smartgwt 5.0, data not loading in few grid columns in datagrid

Hello Sir,

I have a issue here. If a datasource field name contains a period ("."), corresponding column data is not loading in the grid.
For example:
dsf = new DataSourceField("test.abc", FieldType.TEXT, "test title");
dsf .setValueXPath(test+ "/id");

here name = "test.abc".
For the above field data is not loading.

If I remove the period (".") from name, it will work,
as shown below
dsf = new DataSourceField("testabc", FieldType.TEXT, "test title");

currently there are more than 100 dS, we need to make these changes (removing period from name) to make it work.

This is working fine in smartgwt 3.0 versions.

Is there any other alternative(other than removing period from name) to make it work??