Hi Rasmus,
According to Documentation.
https://sapui5.hana.ondemand.com/sdk/#docs/api/symbols/sap.ui.commons.layout.MatrixLayoutCell.html
Matrix cell has a property hAlign (horizontal alignment)
Here are possible values
https://sapui5.hana.ondemand.com/sdk/#docs/api/symbols/sap.ui.commons.layout.HAlign.html
Best Regards
Konstantin
