def _create_parameter(model, pid, value, sbo=None, constant=True, units=None,<EOL>flux_udef=None):
parameter = model.createParameter()  <EOL>parameter.setId(pid)<EOL>parameter.setValue(value)<EOL>parameter.setConstant(constant)<EOL>if sbo:<EOL><INDENT>parameter.setSBOTerm(sbo)<EOL><DEDENT>if units:<EOL><INDENT>parameter.setUnits(flux_udef.getId())<EOL><DEDENT>
Create parameter in SBML model.