[PD] counter which adds 0.1 when i use the up key and substracts 0.1 when i use the downkey

[oren ishii]

hi people
i have problems with a counter
i want to design a counter that adds 0.1 when i use the up key on the 
keyboard and which substractes 0.1 when is use the down key i need the 
counter to move a rectangle with the keyboard in gem up and down with the 
keys. can someone help me?
thx

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