Using ACT, how can I define a variable pressure with Independent Variable set to X in a specific coo

The following code can be adapted:

    analysis=ExtAPI.DataModel.Project.Model.Analyses[0] # refer to analysis
    my_press=analysis.AddPressure() # add pressure
    my_press.Magnitude.Inputs[0].DiscreteValues=[Quantity('1[s]'),Quantity('20[s]')]  # force definition to be set to tabular data
    my_press.Magnitude.Output.DiscreteValues=[Quantity('10[MPa]'),Quantity('20[MPa]')] # define pressure values
    my_press.IndependentVariable=LoadVariableVariationType.XValue # define X as independent variable
    my_press.XYZFunctionCoordinateSystem=ExtAPI.DataModel.GetObjectsByName("Coordinate System")[0] # select coordinate system called "Coordinate System" in which X is defined
    my_press.Magnitude.Inputs[0].DiscreteValues=[Quantity('1[mm]'),Quantity('20[mm]')]  # define pressure values