Unable to debug code when Robot is connected to Unattended license

Installer(.exe or .msi):

License type(Free, Trial/License code):

Studio/Robot version:

Current behavior:

Screenshot:

UiPath Studio version 2018.1.7
License type Unattended

Current behaviour:
When Uipath studio is connected to unattended Robot , when i tried to debug code from Uipath studio then it unable to debug me and prompt below error message-
“Debugging is enabled only for development robots”
Please help !!!

@kumppra - Please check this https://studio.uipath.com/v2018.1/docs/about-licensing#section-connecting-to-orchestrator

Thanks Akash but unable to help me sorted out my issue , can you please explain me more .

Thanks

In the version that you are using it can be done only via development type of robot. To best utilize the robot types i would request you to upgrade to latest version [2018.4.3]

Thanks a lot Akash