Vittoria Pit Stop

[Crankarm]

 Okay so I have just put sum pit stop in my wheel (tube) after a puncture. When I get home and want to inflate the tyre to the correct pressure

1) When I depress (release) the valve doesn't the goo come out and try to repair the valve.

Okay so the valve is free and I pump the tyre to the correct pressure,

what happens the next time I want to pump my wheel, is the valve jammed or what.

2) How many punctures can I have on Vittoria Pit stop that I have just put in?

3) 1 can for one wheel or both?

4) Price?