Single Trigger signal with Waveform and lib files

I want to generate a single pulse of 10ms width and 5V height.
for this I use the wave form generator with a single line with the following parameters :
Function=4, Freq.=1, 0ffset=0, Voltage=10, time=1, Filename=trigger.lib

The file trigger.lib contains
0.0 (100)
1.0 (11)
0.0 (889)

The problem is that instead of have just one pulse, I get two, separated by approximately 500ms.

Is it possible to have just one pulse generated ?

To generate single pulse you can do following:
In the function generator click “MORE FUNCT.” button.
Click “LIB” and locate and open the trigger.lib file.
In the “More Functions” dialog check the check box “Repetition interval”.
Enter large value (e.g. 100000 ms) as repetition interval and press Enter button.
Now click twice the function generators “MORE FUNCT.” button to generate one pulse.

To get sharp edges and exactly 10ms pulse you can use lib file:0.0 (100) (0) 1.0 (10) (0) 0.0 (889)