Portioning your bet at different prices

[Tjt]

I would like to place 75% of my bet at the actual BSP and then the remaining 25% at a certain percentage above the actual BSP in-play.

I have been tinkering around with this in automation but I'm finding some slight difficulty in applying this.

Does anyone know how I can apply this?

The simplest way to apply this would be to make a place back bet rule at the actual BSP using 75% of my desired stake and then to create another back bet rule backing at a certain percentage above the BSP in-play with the other 25% of my stake. The only thing with this is that I will have to manually work out the percentages of my stake and change each one every time I alter my stake(although not difficult).

Then it would essentially become semi-automated. I want to be able to enter any stake of my desired value (100%) and then let the automation do the rest for me.

Any suggestions?

Many thanks in advance