# Energy-Plus Model Rotation

Hi everyone,

I'm using E+ to model a vehicle (train) along the road. I want to let it rotate, in order to account (with precision ) for solar radiation. I read about the feature "Site:VariableLocation" that allows "my building" to rotate or move by giving latitude, longitude and rotation schedules (why should I set the rotation by time zone?). I tried to use it but there were no changes in the rotation. The latitude seems to change but a strange thing happens. The longitude schedule causes the software to crash during the run. The crash window says that there are possible problems with the name of the file, the E+ version, or the presence of "0" that are not correct. Although, I checked the "Site:VariableLocation" for errors and it is correct; and if I remove the object the file perfectly runs. Did someone else use this feature and can help me understand how it works? Otherwise, is there another way to simulate the rotation of a model? (the model change direction in the day and this rotation is repeated for the entire year)

Any tips are appreciated Thanks

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@Gianmarco_29 could you include the text of your Site:VariableLocation object, the error message from your error file, or even links to both files using Dropbox, Google Drive, etc.? That would help others find a solution faster.