Dataset in the simple tag provider

Hi, i have create a simple tag provider.

I have the following code

ourProvider.configureTagType(TagType.Custom, TagEditingFlags.STANDARD_STATUS, null); ourProvider.configureTag(TAG_NAME, DataType.DataSet, TagType.Custom);

Everything works well. But in the designer, when I edit the tag, the tag type is automatically change from dataset to byte when I apply the modification. Then the tag is not longer a dataset and became a byte.

How can I add custom dataset in the simple tag provider ?