# \[RELEASE\] Remotec ZXT-120 AC IR Controller (2015)

**URL:** <https://community.smartthings.com/t/release-remotec-zxt-120-ac-ir-controller-2015/9902>\
**Category:** Community Created Drivers\
**Tags:** thermostat, dth\_hvac\
**Created:** [January 20, 2015, 7:21pm UTC](https://community.smartthings.com/t/release-remotec-zxt-120-ac-ir-controller-2015/9902 "2015-01-20T19:21:13Z")\
**Posts on this page:** 1\
**Showing post:** 88

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**Author:** ![Ron](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/ron/32/80532_2.png) [@Ron](https://community.smartthings.com/u/Ron)\
**Post date:** [December 4, 2016, 11:23pm UTC](https://community.smartthings.com/t/release-remotec-zxt-120-ac-ir-controller-2015/9902/88 "2016-12-04T23:23:28Z")

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> [@bard](#):
>
> You had a stub called getCommandParameters() that looked like you were attempting this as well.

Yea, I was trying to play with altering preferences programmatically but could not get it to work. I was informed via this forum that preferences can not be altered this way.

Here are two threads that might help.

> [@Can I set defaults for input values in the preferences section of a custom device type?](https://community.smartthings.com/t/can-i-set-defaults-for-input-values-in-the-preferences-section-of-a-custom-device-type/18664):
>
> I’m working on a custom device type and in the preferences section I would like to write to the values. So for example the preference section is used to allow a user to enter a temperature offset. I can access the value in the offset but I can’t figure out the syntax to write a new one programmatically. Can someone help with this?

> [@Update preferences field from code](https://community.smartthings.com/t/update-preferences-field-from-code/21219):
>
> Hi All, Is there any way to dynamically fill a preferences field from code? In my SmartApp, I am expanding on @brianwilson’s ThingSpeak code, but making the interface a little more user-friendly by automatically creating a channel on the user’s behalf. My approach is to give the user an option to use an existing channel or create a new one. That means that I have options in my settings for “Channel ID” and “Channel Key”, but if those are empty, I create a new channel. I would like to fill in those fields once I create a channel and then use those values for my actual POSTs. Does anybody know how to do this? Are preferences uni-directional? Thanks, Dan Kurin

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