Identify a letter in a string / append source parameter

[gaudenz]

I’d like to append a source paramenter to an url - by default it would look like [url]?source=[xxx], however if the url already contains a “?”, it should start with “&”. How can I achieve that?

[williamtisdale]

With bubble you can convert a string to a list with ‘split by’. Then you can check if that list contains ‘?’.

[gaudenz]

Thanks for your help. The ‘split by’ is great! However, you cannot check whether it contains ‘?’ because it is replaced by a comma. So what i did is to check whether the returned list count is > 1 and that solved it!
Thanks!