# Read PV forecast

**URL:** <https://discourse.nodered.org/t/read-pv-forecast/71339>\
**Category:** General\
**Created:** [27 November 2022 20:51 UTC](https://discourse.nodered.org/t/read-pv-forecast/71339 "2022-11-27T20:51:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tiks](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/tiks/32/71455_2.png) [@tiks](https://discourse.nodered.org/u/tiks)\
**Post date:** [27 November 2022 20:51 UTC](https://discourse.nodered.org/t/read-pv-forecast/71339/1 "2022-11-27T20:51:14Z")

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Dear all,

I try to read my solar forecast from forecast.solar with node red what works great. Nevertheless I don´t know how to use the data in a function node, because when I e.g. copy the path off "todays watt hours" it contains the date from today. To use it in a function node I have to change the date in a variable. Can someone help me with this?

payload.result.watt\_hours\_day["2022-11-27"]

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**Author:** ![FireWizard52](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/firewizard52/32/34508_2.png) [@FireWizard52](https://discourse.nodered.org/u/FireWizard52)\
**Post date:** [27 November 2022 21:51 UTC](https://discourse.nodered.org/t/read-pv-forecast/71339/2 "2022-11-27T21:51:28Z")

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Welcome to this forum.

Although your question is not very clear to me, I remembered that I struggled with it, some time ago.

Perhaps this is helpful: [Retrieve Dynamic value in object](https://discourse.nodered.org/t/retrieve-dynamic-value-in-object/49437)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [26 January 2023 21:52 UTC](https://discourse.nodered.org/t/read-pv-forecast/71339/3 "2023-01-26T21:52:25Z")

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