# How to dynamically change node property?
**URL:** https://discourse.nodered.org/t/how-to-dynamically-change-node-property/22628
**Category:** General
**Created:** [4 March 2020 17:19 UTC](https://discourse.nodered.org/t/how-to-dynamically-change-node-property/22628 "2020-03-04T17:19:32Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@jchen5057](https://discourse.nodered.org/u/jchen5057)
#### Post date: [4 March 2020 17:19 UTC](https://discourse.nodered.org/t/how-to-dynamically-change-node-property/22628/1 "2020-03-04T17:19:32Z")
How to dynamically change server IP address?
say if I have a modbus, there is a "Server dropdown" box to select the server, can I pass "msg.Server" to select it?
In the Server configuration, can I pass msg.Host and msg.Port to specify these values?
Thanks.
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### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [4 March 2020 17:33 UTC](https://discourse.nodered.org/t/how-to-dynamically-change-node-property/22628/2 "2020-03-04T17:33:05Z")
You will have to read the info sidebar help for the node you are interested in. It should document what message properties it responds to.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [3 May 2020 17:33 UTC](https://discourse.nodered.org/t/how-to-dynamically-change-node-property/22628/3 "2020-05-03T17:33:09Z")
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