.Modelica.ComplexBlocks.Sources.ComplexExpression .Modelica.ComplexBlocks.Sources.ComplexExpressionThe (time varying) Complex output signal of this block can be defined in its parameter menu via variable y. The purpose is to support the easy definition of Complex expressions in a block diagram. Note, that "time" is a built-in variable that is always accessible and represents the "model time" and that Variable y is both a variable and a connector.