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# lp_add_vars(+Handle, +Vars)

Declare Vars to be problem variables for the solver state Handle
*Handle*
- Handle to a solver state
*Vars*
- A list of variables or numbers

## Description

Declares variables in Vars as problem variables for the solver state
represented by Handle. Any of the variables that are not existing
problem variables for Handle are added to the problem. The new
variables' bounds are constrained to -infinity..infinity (infinity as
defined by the external solver).

### Fail Conditions

Vars contain elements which are neither variables or numbers.
## See Also

lp_setup / 4, lp_demon_setup / 5