Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Join us for an expert-led overview of the tools and concepts you'll need to become a Certified Power BI Data Analyst and pass exam PL-300. Register now.

Reply
JJCrone
Regular Visitor

JSON API Query Taking Parameters Expression.Error: We cannot convert a value of type List to type

Hello trying to create a custom fuction off a weather API but having an issue with the funtion, I send the link with out Power bi and it is success full here is what I can

 

JJCrone_0-1652402767086.png

 

 

 

 

 

let sqltext = (Location as text, Date as text, Key as text )  =>
let
    Source =  Json.Document((Web.Contents("https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/"& Text.Split(Location, " ")(0) & "%20" & Text.Split(Location, " ")(1) &"/"& Date &"?unitGroup=metric&include=days&key="& Key &"&contentType=json")))
in
    Source
in 
    sqltext

 

 

 

 

 

 

My error is 

 

JJCrone_1-1652402832472.png

 

 

I have tried it with out using the sqltext and it did not work either. 

1 ACCEPTED SOLUTION
PhilipTreacy
Super User
Super User

Hi @JJCrone 

 

I think it's because you are trying to access the List elements created by Text.Split but you've used () instead of {}

 

So change the braces to curly braces e.g.  Text.Split(Location, " "){0} 

 

regards

 

Phil



Did I answer your question? Then please mark my post as the solution.
If I helped you, click on the Thumbs Up to give Kudos.


Blog :: YouTube Channel :: Connect on Linkedin


Proud to be a Super User!


View solution in original post

1 REPLY 1
PhilipTreacy
Super User
Super User

Hi @JJCrone 

 

I think it's because you are trying to access the List elements created by Text.Split but you've used () instead of {}

 

So change the braces to curly braces e.g.  Text.Split(Location, " "){0} 

 

regards

 

Phil



Did I answer your question? Then please mark my post as the solution.
If I helped you, click on the Thumbs Up to give Kudos.


Blog :: YouTube Channel :: Connect on Linkedin


Proud to be a Super User!


Helpful resources

Announcements
Join our Fabric User Panel

Join our Fabric User Panel

This is your chance to engage directly with the engineering team behind Fabric and Power BI. Share your experiences and shape the future.

June 2025 Power BI Update Carousel

Power BI Monthly Update - June 2025

Check out the June 2025 Power BI update to learn about new features.

June 2025 community update carousel

Fabric Community Update - June 2025

Find out what's new and trending in the Fabric community.