smalltalk - pharo creating a global variable like transcript -

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i want create variable named mamegap accessible every where. can print words transcript ex. method of class. want mamegap too.

i tried 

mamegap:= myclass new. smalltalk at: #mymap put: mamegap.

i want access mamegap this

dosomething: avar    |x|    x:= mamegap getint.    ^x*3

you have do:

smalltalk at: #mamegap put: myclass new

also can put there class object, 

 smalltalk at: #mamegap put: myclass

and sen class-side messages


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