FNCGrid Editor and mask Columns


I'm using a FNCGrid connected via FNCGridDataBaseAdapter and TWebDataSource.

TWebDataSource get data from REST Server...

I create the columns of FNCGridDataBaseAdapter and of FNCGrid dinamically in the execution time.

Then, i create the adapter column assigning the fieldName for any field of dataset and i create this columns i ¡n the grid with their with, alignement, etc.

It work fine. I can see the data in the grid.

But i want to make display mask of columns. For example, i have one columns with float values. Then i want to assign the mask: #,####.### in order of any cell value have tree decimal positions, etc.

How can i do this ?