wrong external inputs

[baggepinnen]

The following produces a system with the wrong external inputs

function assemble(kp, ki, kd, T, d, b, c)
    kp = named_ss(ss(kp), "kp")
    ki = named_ss(ss(ki), "ki")
    kd = named_ss(ss(kd), "kd")
    b = named_ss(ss(b), "b")
    c = named_ss(ss(c), "c")
    F  = named_ss(ss(filt(T,d)), "F")
    s1 = sumblock("kpu = by + Fy1")
    s2 = sumblock("kiu = r2 + Fy2")
    s3 = sumblock("Fu = cy + yiny")
    integrator = named_ss(ss(1/s), "integrator")
    sout = sumblock("u = kpy + integratory + kdy")
    rsplit = splitter(:r, 3)
    yin = named_ss(ss(-1.0), "yin")
    # ysplit = splitter(:y, 3)
    Fsplit = splitter(:Fy, 3)

    external_inputs = [:r, :y]
    external_outputs = [:u]

    connections = [
        # :y1 => :y1
        # :y2 => :y2
        # :y3 => :y3
        :y => :yinu
        :yiny => :yiny
        :r1 => :bu
        :r2 => :r2 # s2 input
        :r3 => :cu
        :by => :by # s1 input
        :cy => :cy # s3 input
        :Fu => :Fu # s3 output
        :kiu => :kiu # s2 output
        :kpu => :kpu # s1 output
        :Fy1 => :Fy1
        :Fy2 => :Fy2
        :Fy3 => :kdu
        :kiy => :integratoru
        :integratory => :integratory
        :kpy => :kpy
        :kdy => :kdy
    ]

    systems = [
        kp,
        ki,
        kd,
        b,
        c,
        F,
        s1,
        s2,
        s3,
        integrator,
        sout,
        rsplit,
        yin,
        # ysplit,
        Fsplit,
    ]

    connect(systems, connections; external_inputs, external_outputs, unique=true)
end