How cant set height of row in style ?

i set height of row :

device: { // <- the key should match the actual data key
            displayName: 'Device ', // <- Here you specify the column header
            headerStyle: styles.headerDark, // <- Header style
            cellStyle: styles.cellList,
            width: 250, // <- width in pixels
            height: 250      height of cell
        },

but not working 