logmode p
wfcreate q 1980 2015

smpl 1980q1 1980q1
series ser1 = 1
smpl 1980q2 @last
ser1 = ser1(-1)+.25

series ser2 
rndint(ser2,100)

equation testeq.ls @pc(ser1) c @pc(ser2)

smpl 2000q1 2000q1
testeq.fit ser1_hat