create table using existing data set is option disabled in jaspersoft studio

[teena.mathew]

I want to create a table using an existing dataset,but i could not manually select create table using existing data set option,only create table using existing data set option is enabled..not able to change it to other option..using jaspersoft studio community edition

[bigalex]

You may need to create a dataset first, then the other option will be available, just copy the existing query into the dataset. A normal report (with a query) does not have a dataset.