Units of pressure/velocity used by QuickerSim in MATLAB ?

Hi,

I'm doing a report on a lifting cylinder in a viscous flow. I'm currently using QuickerSim to compare my experimental results with a numerical simulation. However I'm stuck with the follwoing problem. I don't know what are the Units (for velocity and pressure) used by QuickerSim. I'm following a tutorial (https://quickersim.com/tutorial/tutorial-1-laminar-flow-past-cylinder/) within the velocity is defined as 1 and pressure 0. At the end of the simulation I even get negative pressures... Can anybody help me on this ?

Thx,