Right sintax to call a service that receives a string as param

[lfernandez]

Hi everyone,
I would like to know what would be the right sintax to call service that receives a string as param, for example “Turn right”
I’ve tried with ros2 service call /my_srv custom_interfaces/srv/MyServiceMessage "{data: Turn right}" and with ros2 service call /my_custom_interfaces/srv/MyServiceMessage data:\ "Turn right" with no luck. I0ve always receive the meesage The passed service type is invalid

Thanks in advance.

[zach-nobles]

Hi,

I’ve struggled with this issue, too. Double quotes on the outside and single quotes inside worked for me.

Try the following syntax:
ros2 service call /my_srv custom_interfaces/srv/MyServiceMessage “data: ‘Turn right’”

Good luck!

[alaurao]

Hi Iffernandez try this ```
ros2 service call /service_name package_name/ServiceName “{string_parameter: ‘string_value’}”

[lfernandez]

Thanks @zach-nobles and @alaurao!!
Both options worked for me!
Thanks again!