[Help-glpk] Help needed

[Victor Gutierrez]

Hi all

I have an optimization model whose constraint is as follows:

 

Const_AC4 {j in SCHEDULES}: (TempIN_t_1[j] + 5*(BetaAC * ActLev[j] - ACDECISIONS[j] * AlfaAC + LambAC * OutTemp[j])) = (TempIN_Meas[j] - YAC[j] + ZAC[j]) * (1+5*LambAC);

 

where SCHEDULES is defined as set SCHEDULES := 1..288

 

when I run the code the following message is shown:

 

alternate.mod:31: multiplication of linear forms not allowed

Context: ...C * TempIN_Meas [ j ] - YAC [ j ] - 5 * LambAC * YAC [ j ] +

MathProg model processing error

 

Does anybody have an idea about what does it mean this error?

Thank you very much

Victor