I tried "my:FinancialAllocation/my:Treatment" but it threw an error so I tried "//my:FinancialAllocation/my:Treatment" but that pulled the first rows drop down value again.
Here is the full xpath to the field that resides in the repeating section that I am trying to grab:
/my:myFields/my:GIGroup/my:Years/my:Lines/my:FinancialAllocation/my:Treatment
FinancialAllocation is the name of the repeating section. "Treatment" is the name of the drop down with the values that I am trying to grab using the button that sits next to the drop down on the same line.
Here is a screenshot to help show what it looks like.