Modelling bonded node-to-node contact using CONTA178

[bnret]

Hi everyone,
I am trying to model a beam to beam contact using CONTA178 elements. Preferably, I would just manually check which nodes are sufficiently close to each other and then create a CONTA178 element between them that is instantly set to bonded and couples all DOFs of the corresponding nodes. However, do not seem to find a way to do that, as the displacement of the coupled nodes is varying extremly and never exactly the same. I have already tried most keyopts and now I am a bit clueless. This is how I am currently doing it:

from ansys.mapdl.core import launch_mapdl

mapdl = launch_mapdl()
mapdl.clear()
mapdl.prep7()
mapdl.et(1, "BEAM188", "", "", "", "", "", 2)
mapdl.mp("EX", 1, 30e6) # Elastic modulus
mapdl.mp("NUXY", 1, 0.25) # Poisson's ratio

#define crosssection
mapdl.sectype(1, "BEAM", "CSOLID", "", 0)
mapdl.secoffset("CENT")
mapdl.secdata(0.3, "", "", 0, 0, 0, 0, 0, 0, 0, 0, 0)

#Create Geometry
mapdl.n(1,0,0,0)
mapdl.n(2,1,0,0)
mapdl.n(3,2,0,0)
mapdl.e(1,2)
mapdl.e(2,3)

mapdl.n(4,0,0.5,0)
mapdl.n(5,2,0.5,0)
mapdl.e(4,5)

#CONTA178
mapdl.et(5,"CONTA178")
mapdl.keyopt(5,10,5)
mapdl.e(5,3)

mapdl.d(1,'all',0)
mapdl.d(4,'all',0)
mapdl.d(3,"UY", -1.5)

mapdl.allsel()
mapdl.finish()
mapdl.slashsolu()
mapdl.solve()
mapdl.finish()
mapdl.post1()
mapdl.set(1,1)
nodal_displacements = mapdl.post_processing.nodal_displacement("Y")
print(nodal_displacements)
mapdl.exit()

Which I cannot bring to the point where the displacement of nodes 5 and 3 are the same. Is there something I am doing wrong / I did not understand? Any help is much appreciated!
Thanks a lot in advance!

(Btw, I do know that such a simple set up can also be realized with the CE or CP command, but for more complex systems, I had great troubles making those work, so I thought this would be the more robust approach)

[bnret]

I am so sorry if I have wasted anyones time, I found the solution myself. In case anyone needs it:

1. Somehow, the element pointer was not set correctly, so I had to run mapdl.type(5) before defining the element.
2. Keyopt(10)=5 for bonded from inital step
3. Keyopt(4)=1 so that only GAP constant is used to determine the Gap width
4. mapdl.r(1,"",0) sets the Gap constant to 0, thereby activating the contact from the beginning.

Thanks to everyone that tried to help!