Observations of the CO(3-2) transition of XID2028, redshifted to 2mm, obtained with the PdBI Interferometer. Dates of observations: 31-May, 1, 6, June 2014. XID2028 was observed with receivers tuned to a frequency of 133.37GHz, corresponding to the expected frequency of the CO(3-2) emission line, with the PdBI array in the (D) configuration. The continuum is not detected with a 3σ upper limit on its flux of 0.3mJy.