How can I use a Simulink AliasType to cast a constant in a Stateflow Chart

I have defined a Simulink AliasType as follows:

FloatAlias = Simulink.AliasType; FloatAlias.Description = ['Float Alias type for floating type flexibility ' ... 'is the optimized type.']; FloatAlias.DataScope = 'Exported'; FloatAlias.HeaderFile = ''; FloatAlias.BaseType = 'single';

How am I able to use this "Data Type" to cast a constant assignment within a Stateflow Chart?

When I try to cast 0 with FloatAlias(0), I receive an "Unresolved symbol" error and the Symbol Wizard pops up and asks me to resolve the symbol, what do I do next?