Ansys Mechanical APDL

Подскажите! Задаю нестационарную теплопроводность полиномом MP, KXX, MAT, 8.706, -0.00911, 0.000003992, -0.0000000005004
Выдаёт следующие ошибки
"For defining KXX of material 0 on the MP command, the number of temperature values supplied on the MPTEMP command is only 0. A minimum of 4 temperatures are required as linear interpolation is used between data points." и "The equation for material 0 property KXX is cubic, but the required MPTEMP specification has not been supplied. The MP command is ignored." 
Подскажите в чём может быть проблема и как её исправить?