# How to dynamically set HTML attribute value using UI template mustache syntax?
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**Category:** Dashboard\
**Created:** [22 December 2020 01:10 UTC](https://discourse.nodered.org/t/how-to-dynamically-set-html-attribute-value-using-ui-template-mustache-syntax/37860 "2020-12-22T01:10:15Z")\
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> [@Herold](#):
>
> using only a subflow
If you are doing what I am thinking, there are issues putting UI nodes in a subflow (I forget what - but it doesnt work as expected)
> [@Herold](#):
>
> My goal is mainly to factorize UI templates
Perhaps this is of some help - something i did some time back...
> [@Adding \`output\` function to buttons designed in \`template\` node](https://discourse.nodered.org/t/adding-output-function-to-buttons-designed-in-template-node/25591/54):
>
> Andrew, some home work for you tomorrow... I have updated the code to also handle repeat buttons - try to implement them. PS, backup your flows first smiley Dont worry, the idea is exactly the same (add some attributes to a button then magic happens automatically) Visual Demo note... holding VOL buttons sends repeat messages the lock button is font awesome (the rest are material design) The flow [{"id":"f4fac1e9.e93e4","type":"ui\_template","z":"e1dfad68.fee2a","group":"be17…
there are lots of hint and clues in there that might prove useful (like moving away from directly specifying colours - using classes instead, etc)
> [@Herold](#):
>
> i've got parse error with Devtools on:
> ``
That shouldn't even get through to the browser. Share your code if you want someone to look closer.
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