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First thank you for solving this problem. It worked. But we have another problem, in our model; CB.JK.1.CB2.SG2.sr2, CB.JK.1.SG2.SG1.T, CB.JK.1.SG1.HK1.sr1, CB.JK.1.HK1.JK1.sr1, CB.JK.2.CB2.JK1.F, CB.JK.3.CB2.SG2.sr2, CB.JK.3.SG2.HK2.sr2, CB.JK.3.HK2.HK1.T, CB.JK.3.HK1.JK1.sr1, For example, about th...

Hi again, Thank you for your answer. Sorry for that problem, I'm writing full code now. Thank you for your interest set o "Origin port" /HK,JK,SG,XM,CB/ p "Ports" /HK1,HK2,JK1,SG1,SG2,XM2,CB2/ e "Vessel Classes" /A,B,C/ v "Vessel Speed" /17k, 21k, 25k/ i "...

Hello We are modeling the liner shipping routes. And we are using gams for solution. But we can't do the syntax correct. Error is in this section. set s "Service Routes" / sr1,sr2,T,F / r(p,s) "Ship Routes" /(HK1.JK1.SG1.HK1).sr1 , (HK2.XM2.SG2.CB2.SG2.HK2).sr2 / a(o,d,i,p,pp,s) ...