Question: plotting a function from a procedure

I wrote the procedure below and i want to plot on one graph for the range lambda = 0 to 60 (x-axis),  beta = 0, beta = 5, beta =10, beta = 15, beta = 20 etc. 

in other words i want to plot Cp vs lambda at different beta values

Can any one assist me in doing this.

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Cplot := proc (beta, lambda)

local lambda0, Cp;

lambda0 := 0.22e-1*beta^2+(7/1000000000000000)*beta+5.6;

if lambda < lambda0

Cp := 0.1e-2;

else

Cp := ((1/2)*lambda+(1/2)*(-1)*0.22e-1*beta^2+(1/2)*(-5.6))*e^((-1)*.17*lambda)

end if

end proc

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