[Gretl-users] nonliinear least squares

I can't execute the following program: ols ld_SGD ld_USD ld_EUR ld_JPY ld_TWD ld_INR ld_KRW ld_IDR ld_AUD ld_THB genr b0 = coeff(ld_USD) genr b1 = coeff(ld_EUR) genr b2 = coeff(ld_JPY) genr b3 = coeff(ld_TWD) genr b4 = coeff(ld_INR) genr b5 = coeff(ld_KRW) genr b6 = coeff(ld_IDR) genr b7 = coeff(ld_AUD) nls ld_SGD= b0*ld_USD + b1*ld_EUR + b2*ld_JPY + b3*ld_TWD + b4*ld_INR + b5*ld_KRW+ b6*ld_IDR + b7*ld_AUD + (1-b0-b1-b2-b3-b4-b5-b6-b7)*ld_THB end nls I attach the corresponding dataset. Can you see what's wrong ? Thank you