@alice_oneill When adding a hyperlink filed you value needs to be the formatted like this 

url,text - so the url string then a comma and the text for the link, you can just supply the url . 

Hi Rick, I’ve already tried that and it doesn’t work - it just doesn’t write to the field at all. Do you have a working example I could look at?

Thanks.

Hi @alice_oneill,

I have tested this functionality, and it works out of the box.
I just entered a URL and tried using a variable as well, and both worked.
Do you have the same issue with SharePoint designer workflows?

Hi @SimonMuntz It’s very strange - I can write the value to a text field but as soon as I try and write to a “Hyperlink or picture” field it just does nothing. And it’s definitely a valid url. I might have to log a call - maybe it’s something to do with our set up. Thanks for replying.

Well - I’ve fixed it. I created a new field and wrote to that and it worked. So annoying! Anyway, this might help someone in the future so thought I’d let you know. Thanks @SimonMuntz for the help :)