# How to add code in function MC protocol

**URL:** <https://discourse.nodered.org/t/how-to-add-code-in-function-mc-protocol/76744>\
**Category:** General\
**Created:** [20 March 2023 12:03 UTC](https://discourse.nodered.org/t/how-to-add-code-in-function-mc-protocol/76744 "2023-03-20T12:03:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Bao](https://avatars.discourse-cdn.com/v4/letter/b/eb9ed0/32.png) [@Bao](https://discourse.nodered.org/u/Bao)\
**Post date:** [20 March 2023 12:03 UTC](https://discourse.nodered.org/t/how-to-add-code-in-function-mc-protocol/76744/1 "2023-03-20T12:03:47Z")

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Hi Steve,  
I am facing the case as below.how to open the protocol MC file and add some code.  
 ![IMG_20230320_185847](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/3/b3be2c56389fc3b9a46e09fe12e2bbd029eba889.jpeg)

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [20 March 2023 12:17 UTC](https://discourse.nodered.org/t/how-to-add-code-in-function-mc-protocol/76744/2 "2023-03-20T12:17:41Z")

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can you link to the issue please

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<div class="post-metadata">

**Author:** ![Bao](https://avatars.discourse-cdn.com/v4/letter/b/eb9ed0/32.png) [@Bao](https://discourse.nodered.org/u/Bao)\
**Post date:** [20 March 2023 14:06 UTC](https://discourse.nodered.org/t/how-to-add-code-in-function-mc-protocol/76744/3 "2023-03-20T14:06:41Z")

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Hi Steve,  
I already wrote the code in mcprotocol as pic below. But still appears error time out.please look the pic.

 ![IMG_20230320_210410](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/0/d07514a79b67d53ac702eed14fa8a9acf679295b.jpeg)