Problem with Syncing Reports with OneDrive

Hello Friends !

I am experiencing the following problem:

We are 2 guys working together as developers in our company.

Our idea was to keep the PowerBI Reports on the OneDrive server, then both of us to be able to Edit the reports and work in the same Workplace

So first we imported the Reports directly from GetData -> OneDrive Business in PowerBI.com -> Then we set our Gateways ->
And finaly we wanted to use the function "OneDrive - Refresh", which should in theory allow us to edit the reports (visuals) on  OneDrive and then the system will automatically refresh the visuals every hour.

Unfortunatelly we are unable to make it working. For an example if Open the report from OneDrive -> Then change a graph on the visual and wait more than 1 hour -> Still the visuals are NOT Getting updated in PowerBI service.

The only refresh we are getting is on the data-sets, but we need the visuals to be regulary updated too

How should this be managed ? What is the proper way to work with a multiple developers ?
Please help with your opinions !