hi dear gams friends

could you help me about these errors in my model?

Equations

shiftrequirement(j,k)

mindayrequirement(i,k) minimum number of hoursâ€™ requirement on any given day

maxdayrequirement(i,k) maximum number of hoursâ€™ requirement on any given day

minweekassignment(i) assignment an absolute minimum every week

maxweekworking(i) maximum number of hours during a week

satisfaction ;

## shiftrequirement(j,k) … sum(i,y(i,j,k)) =e=b(j,k);

mindayrequirement(i,k) … sum(j,y(i,j,k)*t(j,k))=g=Dmin*x(i,k) ;

maxdayrequirement(i,k) … sum(j,y(i,j,k)*t(j,k))=l=Dmax ;

minweekassignment(i) … sum((j,k),y(i,j,k)*t(j,k))=g=Wmin ;

maxweekworking(i) … sum((j,k),y(i,j,k)*t(j,k))=l=Wmax ;*

satisfaction…sum((i,j,k),y(i,j,k)((w(i)*p(i,j,k)*a(i,j,k))+(a(i,j,k)-1)*w(i)))=e=z ;

model satisfactions ;

Solve satisfactions using lp maximizing z ;

Display x(i,k),y(i,j,k);

Solve satisfactions using lp maximizing z ;

**** $241 $257

66 Display x(i,k),y(i,j,k);

**** $143,141,409

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satisfaction…sum((i,j,k),y(i,j,k)

Untitled_1.gms (2.44 KB)