# Harmony app gives error when trying to control device directly

**URL:** <https://community.homey.app/t/harmony-app-gives-error-when-trying-to-control-device-directly/23491>\
**Category:** Questions & Help\
**Created:** [December 31, 2019, 12:23pm UTC](https://community.homey.app/t/harmony-app-gives-error-when-trying-to-control-device-directly/23491 "2019-12-31T12:23:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![B3rt](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/b3rt/32/9435_2.png) [@B3rt](https://community.homey.app/u/B3rt)\
**Post date:** [December 31, 2019, 12:23pm UTC](https://community.homey.app/t/harmony-app-gives-error-when-trying-to-control-device-directly/23491/1 "2019-12-31T12:23:24Z")

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When i try to send individual command using the harmony app i almost always have to enter 3 params to the card.  
The first is the group the second is the command, the third is almost always a complete mistery what to enter, 9 out of 10 commands don’t need a 3the param, but you have to enter something otherwise the flow card is not accepted, so you fil; something in 0,1,2 etc

But then when you try to run the flow it (ofcourse) errors like  
 ![2019-12-31_131621](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/4/545b57003c66cb7765d180e08e9967b56b47edc2.png)

I hust have no idea how to fix this, the first 2 params are correct but the 3th i have no idea what to fill in.

(i try to change the input of my pioneer receiver)  
First option: Miscellaneous  
Second option: InputBluetooth  
3th option: is a number (tried 0 until 10 but all failed with same error)

Anyone an idea how to send individual custom commands using flow cards and harmony?