Changes to Virtumart (Joomla) Custom Size Detail Extension

We have sites running Virtumart and Joomla. They both use the Custom Size Detail extension :- [login to view URL] This calculates the price of a product based on dimensions entered. We need changes made to it on both sites. However you must have experience using this module or feel 100% confident you can complete the task we are asking. Please DO NOT BID if you are unsure on how you will do this. 1. On the glass site, if "shaped glass" or "clipped corners" are selected it be the same price as plain glass plus £5.50. 2. On the bricks site, if "shaped bricks" are selected it be the same price as square / rectangular bricks plus £5.50. To achieve this the extension owner has said :- In customfield customsize activate option "use variant price" Use then native vm e.g. customfield string to add this option price. For this you can view e.g. sampledata of vm search customfield string or visit [login to view URL] A secondary response from them also said :- Hello, It is possible to add relative or absolute values using native customfields as price variants for price modification. To enable to combine it with plugin tick the box "use variant price" [login to view URL] For details please find screenshot of backend of this product shown in link attached to the mail. The "String, is input" in my case will be multiplied will calc result (relative case), the "String, admin list Tooltip" will be added as absolute fee per product. --------------------------------------------------------------------------- The second thing we want added is extra options :- 1. On the glass site where you pull down the menu for plain glass, shaped glass etc, it should now be :- * Plain Glass 4mm * Plain Glass 5mm * Clipped Corners 4mm * Clipped Corners 5mm * Shaped Glass 4mm * Shaped Glass 5mm As per the first part of the project above, the clipped / shaped will be £5.50 more than the plain and we will set the values it uses to calculate once you have added the options. 2. On the bricks site where you pull down the menu for Square / Rectangular or Shaped Bricks, it should now be :- * Square / Rectangular 25mm * Square / Rectangular 30mm * Shaped Bricks 25mm * Shaped Bricks 30mm As per the first part of the project above, the shaped will be £5.50 more than the plain and we will set the values it uses to calculate once you have added the options. Please do not bid if you are unsure and we would appreciate it if you put a simple project proposal that acknoledges that you have read and feel you can complete this. AGAIN, you must have experience with this module or feel very confident with this project. Thanks