VI to update excel report every time is ran

HI all,

Im new to the LV world and i was wondering if someone here can help me with my current issue.

Im trying to create a Vi that every time its ran it records the selected values into a spreadsheet(template) and saves it. 

so far i have i working as mention before, the issue is i dont want to create a new report every time the Vi is run  but to update the same report by moving one row down in the spreadsheet.

So lets say I run the VI to check a voltage and current, it records the values (which i get it do so ) in row A1 and A2.

Next day I run it again and it should record the values in the same spreadsheet but B1 and B2 and so on and on.

I do get it to work if i use the write to delimited spreedsheet VI but that is only for .CSV and i needed to be on a excel file because the template is a report  that has its own format and conditions  

below is a screenshot of the Vi ,any ideas on how to get the Microsoft parameter cluster to increase  by 1 every time the VI is ran.

Thank you