Can't use user defined Tp limits in PropertyPlot in Python

[HaSchneider]

If I want to adjust the tp limits of a PropertyPlot by using the function set_Tp_limits(), e.g.:

import CoolProp
from CoolProp.Plots import PropertyPlot
plot = PropertyPlot('Water', 'hs', tp_limits = 'ORC')
plot.set_Tp_limits([10, 800, 0.1, 40])
plot.calc_isolines()
plot.show()

I get the Error:
TypeError: unhashable type: 'list'

This can be fixed by intending those two lines.