Fixed issue with assigning validator to enum parameters.

Author: SteveMaas1978

FECore/FEParam.cpp

@@ -242,15 +242,17 @@ FEParam* FEParam::setUnits(const char* szunit) { m_szunit = szunit; return this;
 FEParam* FEParam::setEnums(const char* sz)
 { 
 	// count the enums
-	int n = 0;
-	const char* s = sz;
-	while ((s != nullptr) && (*s != 0))
+	if (sz && (sz[0] != '$') && (type() == FE_PARAM_INT))
 	{
-		s += strlen(s) + 1;
-		n++;
+		int n = 0;
+		const char* s = sz;
+		while ((s != nullptr) && (*s != 0))
+		{
+			s += strlen(s) + 1;
+			n++;
+		}
+		SetValidator(new FEIntValidator(FEParamRange::FE_CLOSED, 0, n - 1));
 	}
-
-	SetValidator(new FEIntValidator(FEParamRange::FE_CLOSED, 0, n-1));
 	m_szenum = sz; return this; 
 }