# PyDataSet assigned to custom not converted to dataset anymore?

**URL:** <https://forum.inductiveautomation.com/t/pydataset-assigned-to-custom-not-converted-to-dataset-anymore/39016>\
**Category:** Ignition\
**Tags:** ignition80, perspective\
**Created:** [September 24, 2020, 12:24pm UTC](https://forum.inductiveautomation.com/t/pydataset-assigned-to-custom-not-converted-to-dataset-anymore/39016 "2020-09-24T12:24:42Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Matthew.gaitan](https://avatars.discourse-cdn.com/v4/letter/m/59ef9b/32.png) [@Matthew.gaitan](https://forum.inductiveautomation.com/u/Matthew.gaitan)\
**Post date:** [September 24, 2020, 4:48pm UTC](https://forum.inductiveautomation.com/t/pydataset-assigned-to-custom-not-converted-to-dataset-anymore/39016/3 "2020-09-24T16:48:40Z")

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I noticed this as well and posted about it here:  
[http://forum.inductiveautomation.com/t/bug-446-runprepquery-no-longer-returning-dataset-from-script-transform-as-of-8-0-16](http://forum.inductiveautomation.com/t/bug-446-runprepquery-no-longer-returning-dataset-from-script-transform-as-of-8-0-16)

In the meantime you should be able cast it to a `BasicDataset` to retain the same functionality you had in 8.0.13.

```auto
from com.inductiveautomation.ignition.common import BasicDataset
return BasicDataset(system.db.runNamedQuery(args))

```

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