First of all, You can put the special characters within a data item, data type: Text.
The trick is when you maps the object to use in the navigate. In the application modeller in the attributes of the element mapped, you must change the match type to dynamic, So when you use in the navigate, automatically it available the paremeter options where you can put the data item con the special character.
I hope had helped you.
best regards,
EC
