PCM with negative melting or freezing temperature

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I have asked a company to provide me with their PCMs datasheet and some of them have melting/freezing lower than 0. When I apply the PCM characteristics and assign in it to the building elements, EnergyPlus simulation fails because of that negative amount. Is there any way to define melting/freezing points with an amount lower than 0 for PCMs in an IDF file?

Any recommendation would be appreciated.