# GSN approveFunction values

**URL:** <https://forum.openzeppelin.com/t/gsn-approvefunction-values/3619>\
**Category:** Support\
**Created:** [August 24, 2020, 5:12am UTC](https://forum.openzeppelin.com/t/gsn-approvefunction-values/3619 "2020-08-24T05:12:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![h00j](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/h00j/32/1725_2.png) [@h00j](https://forum.openzeppelin.com/u/h00j)\
**Post date:** [August 24, 2020, 5:12am UTC](https://forum.openzeppelin.com/t/gsn-approvefunction-values/3619/1 "2020-08-24T05:12:29Z")

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I’m wanting to use GSN without React, I’ve read the [Advanced GSN: GSNRecipientSignature.sol](https://forum.openzeppelin.com/t/advanced-gsn-gsnrecipientsignature-sol/1414) tutorial multiple times. But it does not explain why or where the values for the approveFunction are sourced.

from - Are we using the users public wallet address?  
to - I’m assuming this is the contract we’re calling?  
encodedFunctionCall - Pretty self explanatory, its the function of the contract we’re calling.  
txFee - How can we get this information?  
gasPrice - How can we get this information?  
gas - How can we get this information?  
nonce - How can we get this information?  
relayerAddress - How can we get this information?  
relayHubAddress - How can we get this information?

Thanks!

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**Author:** ![abcoathup](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/abcoathup/32/415_2.png) [@abcoathup](https://forum.openzeppelin.com/u/abcoathup)\
**Post date:** [August 24, 2020, 5:23am UTC](https://forum.openzeppelin.com/t/gsn-approvefunction-values/3619/2 "2020-08-24T05:23:52Z")

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Hi @h00j,

All development on the GSN has been moved to the [OpenGSN](https://github.com/opengsn) organization.

I recommend asking this question on the OpenGSN Telegram: [https://t.me/joinchat/F\_BETUjG0Crb2s6mFx1LWA](https://t.me/joinchat/F_BETUjG0Crb2s6mFx1LWA)