# Dynamically setting property when merging 2 images

**URL:** <https://discourse.nodered.org/t/dynamically-setting-property-when-merging-2-images/83042>\
**Category:** General\
**Created:** [20 November 2023 22:03 UTC](https://discourse.nodered.org/t/dynamically-setting-property-when-merging-2-images/83042 "2023-11-20T22:03:47Z")\
**Posts on this page:** 1\
**Showing post:** 10

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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:** [21 November 2023 07:30 UTC](https://discourse.nodered.org/t/dynamically-setting-property-when-merging-2-images/83042/10 "2023-11-21T07:30:08Z")

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> [@cymplecy](#):
>
> is there still a penalty if the viewer switch is off?

Yes. The message is still transmitted down the wire.

And this conversation now dovetails nicely into another thread...

> [@Custom node appearance and event handlers. Proof on concept: Inline Gauge](https://discourse.nodered.org/t/custom-node-appearance-and-event-handlers-proof-on-concept-inline-gauge/83001/12):
>
> I would love ❤ to see nodes have more capabilities including better UI when having both input/output AND buttons.
> 
> Clearly, the current design makes this look awful (wires passing through the buttons - yuk) but I'd love to see it addressed with a UI refresh.
> 
> One way of supporting this would be a node redesign (😱) with the buttons moved internal to the node body, permitting input/output wires to connect to the edges

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