[Help-glpk] cannot convert 1..720 to floatin-point number

[Daniele Micarelli]

 [Help-glpk] cannot convert 1..720 to floatin-point number

 tried the recommended changes, but nothing to do

the error "cannot convert 1..720 to floatin-point number" occurs in the bond "subject to PrecTemp{i in A,j in A}: sum{t in T} t*x[j,t] >= sum{t in T} t*x[i,t] + d[i] ;  /* vincolo precedenze temporali */ "

x[i,t] is the variable
d[i] is the numeric parameter

thank yuo very much