Partially subscript axis title of an execl chart object dynamically using vb.net

Question

Hi

I have a critical problem as i need to partially subscript the Y Axis Title of my chart object which is being dynamically generated in an Excel worksheet through vb.net.

For an Example :

The title would be like 'cmax' where c should be subscripted as we write H2O where 2 is written as exponential.

When I am trying to use ...Font.Character(1,3).subscript = false and ...Font.Character(0,1).subscript = true the last line only getting executed and the whole text got subscripted.