v_t706f Miles limit with decimals

Hi experts,

My client need to customize miles/kmts limit for travel expenses with decimals. It means, below 5,4 ktms the price will be 40,12 and below this, the price will be different.

The problem with this is that the field KMGRE at the table v_t706f do not allow me to indicate decimals.

Is that correct? Is there any customizing option to change this?

Many thanks for your help

Regards