Heya @jeffs88keys just saw your reply today. Were you able to resolve this? How about using calculated value. You can reference that virtual field that contains the parameter in another virtual field which you can turn in to a calculated field for replacing the special character. Then, instead of the virtual field that still contains the space (your virtual field 4 I suppose), you can use this new one (the one who makes the calculations) and pass that instead. However, I don't know the overall workflow of your app.
Even so, I still hope this helps
- Jihyo ♥