# \[mini feature request\] C# can't see some low level API DSP\_STATE\_FUNCTIONS
**URL:** https://qa.fmod.com/t/mini-feature-request-c-cant-see-some-low-level-api-dsp-state-functions/15144
**Category:** Unity
**Created:** [October 18, 2019, 4:15pm UTC](https://qa.fmod.com/t/mini-feature-request-c-cant-see-some-low-level-api-dsp-state-functions/15144 "2019-10-18T16:15:28Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@r618](https://qa.fmod.com/u/r618)
#### Post date: [October 18, 2019, 4:15pm UTC](https://qa.fmod.com/t/mini-feature-request-c-cant-see-some-low-level-api-dsp-state-functions/15144/1 "2019-10-18T16:15:28Z")
Hello,
While conforming to current Unity’s IL2CPP limitation [IL2CPP doesn’t support marshaling delegates that point to instance methods] I found out that some needed DSP structures members of low level API aren’t accessible from user code
| to obtain an instance reference I’m using custom/user data of dsp decsription and getting it via DSP\_STATE function |
I understand that doing this correctly might be more involved, but please - would it be possible to expose / make public for the time being at the very least `getuserdata` field of `DSP_STATE_FUNCTIONS` so users wouldn’t have to patch Integration manually 🙂
Thank you !
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### Author:  [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)
#### Post date: [October 23, 2019, 3:24am UTC](https://qa.fmod.com/t/mini-feature-request-c-cant-see-some-low-level-api-dsp-state-functions/15144/2 "2019-10-23T03:24:06Z")
We have actually just fixed that for the upcoming release (at the start of November).
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### Author:  [@r618](https://qa.fmod.com/u/r618)
#### Post date: [October 23, 2019, 4:55am UTC](https://qa.fmod.com/t/mini-feature-request-c-cant-see-some-low-level-api-dsp-state-functions/15144/3 "2019-10-23T04:55:15Z")
Thank you, awesome !