Have to use user defined wind loads (CII 4.50) option "User-defined Wind Pressure vs Elevation".
I fill up the table and save the loads without any problems.
After leaving the load case editor the program changes the option to "User-defined wind velocity vs elevation"
and shows the given values in the velocity vs elevation table.
Any quick help would be appreciated.

Thank you for bringing this to our attention (the pressure and velocity radio buttons got mixed up). We will send you a fixed file as soon as it is available (provided we have your email address).

In the meanwhile, a quick workaround is as follows (if you need to enter the Pressure vs Elevation data):
(1) open the Static Analysis Wind Loads Tab
(2) click the "Velocity vs. Elevation" radio button
(3) click the "User Wind Profile" button. The table will show the "velocity" column; this is just a caption that corresponds to the radio button selection
(4) enter the data as if it were pressure (actual pressure values in current pressure units, as expected); click OK
(5) do not run analysis at this time!
(6) then spin to another wind case, or move to a different tab, or save the file;
(7) then go back to the wind case that you just modified, the data will display correctly (the "Pressure" button will be highlighted, and the table will show the Pressure caption). You may run the analysis at this time. Please, DO NOT click the radio buttons at this time any more
(8) do the similar procedure for other wind loads
(9) if you need to enter the Velocity data, click the "Pressure" radio button and precede in similar manner

Sorry for inconvenience...