REST API Input -- Checkpoint datetime parameter encoding in API url.

Hello! I am trying to define a REST data input that uses an encoded URL param to fetch data. That param is a datetime value, called 'last_seen', see the following image: ![alt text][1] [1]: /storage/temp/275810-untitled.png What I'm after is a way to encode the datetime value so that the API can process it correctly. Example: for a value of **2017-07-26T15:07:37.000+01:00** the encoded string value should look exactly like this **2017-07-26T15%3A07%3A37.000%2B01%3A00**