{{eq value1 value2}}true if value1 is equal to value2.{{ne value1 value2}}true if value1 is not equal to value2.{{gt number1 number2}}true if number1 is greater than the number2.{{lt number1 number2}}true if number1 is less than number2.{{gte number1 number2}}true if number1 is greater than or equal to number2.{{lte number1 number2}}true if number1 is less than or equal to number2.{{isNull value}}true if value is null.{{isNotNull value}}true if value is not null.{{isNil value}}true if value is null or undefined .{{isNotNil value}}true if value is not null or undefined.{{isIn value array}}value is in array.value{{isNotIn value array}}true if value is not in array.value{{startsWith string1 string2}}true if string1 starts with string2.string2string1{{endsWith string1 string2}}string1 ends with string2.string2string1{{contains string1 string2}}string1 exists in string2.string2string1{{doesNotContain string1 string2}}true if string1 does not exist in string2.string2string1{{isEmpty path}}true if the value of the variable path is undefined or not included in the data set.{{isNotEmpty value}}true if value is undefined or not included in the data set.{{matches string expression}}