If you need more informations, you can follow the tutorial. You can also find a template for at the end of the page.
The tutorial
How to change fields type for every component in Looker Studio ?
In Looker Studio, every metric has a type so the report can display them right. You can change a metric type in a component, it will only be applied for this component.
But you can also modify the type of a field in the data source. Once done, it will apply every time you use this field.
Here is how to do it :
Edit your data source and go to the field list.
Search for your field thanks to the search box in the top right corner.
Modify the type in the Type column.
This tutorial in video :
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