How compare boolean from events occurred with if statement ( == and nested if statements )?

Do you use logical / releational operator "==" and nested if statements to test for the occurrence of multiple events? I gathered this code from

A Tutorial on Krpano Action Arguments (pt 1)

The type boolean found variables were declared local to each particular hotspot.

if (hotspot[JohnCard].johnFound == true,
if (hotspot[JamesCard].jamesFound == true,
set(hotspot[bandUnited].visible,true);
);

If I want to call an action after five events occur, How do I code the if statement that tests the "logical and" of multiple boolean tests.

Five hotspot instances {one, two, three, four, five}
Each instance has a boolean variable found attribute

if( hotspot[one].found == true,
if( hotspot[two].found == true,
if( hotspot[three].found == true,
if( hotspot[four].found == true,
if( hotspot[five].found == true,
showBandReunited();</action>
);
);
);
);
</action>

So that method showBandReunited is called when instances one.found and two.found and three.found and four.found and five.found are all true.

The code is not working.
( The code is a mess as I have been learning much about the xml and scripting for this task. If I wrote it again, I would be able to utilize parameters and reduce the amount of script )
http://www.stoneyphoto.com/runner/work/index.html

Thank you Klauss. I fixed the missing parenthesis and rewrote the code to distribute the found variables. It works.