This is my problem i dont know h0)ow to combined different formula.
This is my example
item width height lenght area
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this is the formula of item that will show in the area
staight=width+height*lenght
elbow=width+height*(lengh+150)
straight=(width+height*lenght)+(width*height)
so how to combined this formulas so that when i type the either of name of item it will use the formula of that name and it
will show automatically in the area.
Hope you understand my explanation and i hope you can help me in my problem
thank you very much
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