Sending 8-bit unsigned integer in LabVIEW

Hi

I'm sending a bytestream of pixel values in from LabVIEW to a C-program through TCP connection. I just wondered whether this code really sends uint8 data or not, because when I'm reading the data with a console application in C, 3/4 values are zero, as shown in the picture below:

and then, when I switch the boolean expression to send a 32-bit unsigned integer values, only 1/4 values are zero values instead. Does this block really send uint8 values ?:

The VI is uploadet.