Exhibit 6

                               IRREVOCABLE PROXY

                  The undersigned shareholder of Tecnomatix Technologies Ltd.,
a company formed under the laws of the State of Israel (the "Company") hereby
irrevocably appoints and constitutes Ben Sandler as the attorney and proxy of
the undersigned with full power of substitution and resubstitution to the full
extent of the undersigned's rights with respect to (i) the issued and
outstanding ordinary shares, par value NIS 0.01 per share of the Company
("Company Shares"), owned of record by the undersigned as of the date of this
proxy, which shares are specified on the final page of this proxy and (ii) any
and all other Company Shares which the undersigned may acquire beneficially or
of record after the date hereof (collectively, the "Subject Securities"). Upon
execution of this proxy, all prior proxies given by the undersigned with
respect to any of the Subject Securities regarding the matters that are the
subject hereof, are hereby revoked and no subsequent proxies will be given
with respect to any of the Subject Securities. This proxy is irrevocable and
coupled with an interest, until the earliest to occur of any of the events
specified in clauses (i) through (iii) of the following paragraph, at which
time this proxy shall automatically be revoked.

                  Each of the attorneys and proxies named above are hereby
instructed and authorized to exercise this proxy during the period from the
date hereof until the earlier of (i) the termination of the Agreement of
Merger (the "Merger Agreement"), dated the date hereof, among the Company, UGS
Corp., a Delaware corporation, ("Buyer") and Treasure Acquisition Sub Ltd., an
Israeli corporation and a wholly owned subsidiary of Buyer ("Merger Sub"), in
accordance with its terms, (ii) the agreement of Buyer and the undersigned to
terminate this proxy, and (iii) the Effective Time (as defined in the Merger
Agreement), to vote (or cause to be voted) all of the Subject Securities, at
any annual, special or other meeting of the shareholders of the Company, and
at any adjournment or adjournments thereof, or pursuant to any consent in lieu
of a meeting or otherwise, which the undersigned has the right to so vote:

                  (i) in favor of the Merger (as defined in the Merger
         Agreement) and the approval and adoption of the Merger Agreement, and
         any actions required in furtherance thereof; and

                  (ii) against (A) any extraordinary corporate transaction,
         such as a merger, consolidation, share exchange, rights offering,
         reorganization, recapitalization, reclassification or liquidation
         involving the Company or any of its subsidiaries other than the
         Merger and other than a transaction between the Company and any of
         its subsidiaries, (B) a sale, lease, exchange, transfer or other
         disposition of at least 20% of the assets of the Company and its
         subsidiaries, taken as a whole in a single or a series of related
         transactions, other than a transaction between the Company and any of
         its subsidiaries, or (C) the acquisition, directly or indirectly, by
         any person of beneficial ownership of 20% or more of the Company
         Shares, whether by merger, consolidation, share exchange, business
         combination, tender offer, exchange offer, or otherwise, taken as a
         whole in a single or a series of related transactions.

         This proxy does not relate to, and the undersigned remains entitled
to vote in its discretion the Subject Securities on, all other matters. This
proxy shall be binding upon the heirs, successors and assigns of the
undersigned (including any transfers of any of the Subject Securities).

                                     * * *

                 [Remainder of Page Intentionally Left Blank]






         Date: January 3, 2005



                                              /s/ Aharon Dovrat
                                              ---------------------------------
                                              Aharon Dovrat

                                              Number of Company Shares owned
                                              beneficially or of record: 70,000