Cannot read from the buffer connected to the ADC block

I have a connection as shown in the figure and I want to see the values in the buffer. But when ı run my simulink connected to F28335 dsp the ı see the values in Ia and Ib but I see buffer as [ ] when I loook at the workspace but as seen from the figure in simulink the dimention is 200x1. Am I doing somthing wrong because the buffer works oral with repeating sequens block.