How To Create A Product With Options That Change Base Price - Oid Options System Was Perfect

How to create a product with options that change base price

I used to be able to use the old Options system to create products the had option with additional costs attached to them so that depending on which options were chose the base price would adjust accordingly.

I could even create complex products using the Forbidden Combinations system

For example. I have a product - garden room

Base price £1000

1st Option; Size - 10x10, 20x20, 30x30 etc
2nd Option; Internal Cladding Size - 10x10, 20x20, 30x30

3rd Option; Electric Package - Bronze, Silver, Gold

etc etc

All the options variables have prices attached to them.

Using forbidden combinations for 1st Option and 2nd Option I would have been able to set it so that if the customer chose eg Size 10x10 the only option they would have available in 2nd option would be 10x10.

I don't seem to be able to create a product like this anymore, it not possible?

The variations system seems setup for simple stuff likes clothes with different sizes or colours that don't have any affect on price.

How can I do what I need to do?

Thanks

No answers? Has CS-Cart removed the ability to do this now?