Import references from exotic database called "BASIS"

Hello,
can anybody tell me if it is possible to import references from such a text file. I am working for hours, but i am not able to create any working import filter. Is ist possible to create import filters with variable tag length?

Thany you very much

Volker123

:#FIELD>
#FIELD NAME = SCOPE_ENGL>Other problems#FIELD>
#FIELD NAME = SCOPE_GERM>Sonstige Probleme#FIELD>
#FIELD NAME = SERCOLLAT>v. 60 p. 185-189#FIELD>
#FIELD NAME = SERISSN>ISSN 0015-038X#FIELD>
#FIELD NAME = SERPUBDATE>(1958)#FIELD>
#FIELD NAME = SERTITLE>Fette-Seifen-Anstrichm.#FIELD>
#FIELD NAME = SOURCE>Fette-Seifen-Anstrichm.#FIELD>
#FIELD NAME = SUBJCODE>C43#FIELD>
#FIELD NAME = TITLE>The effect of gamma irradiation on drying oils and similar products#FIELD>
#FIELD NAME = TITLE_S>The effect of gamma irradiation on drying oils and similar products#FIELD>
#FIELD NAME = UPDATE>20040601 #FIELD>
#FIELD NAME = NUMBER>70002101#FIELD>
#FIELD NAME = AUTHOR>Highlands, M.E.
Schreiber, J.S.#FIELD>
#FIELD NAME = AUTHORS>Highlands, M.E.
Schreiber, J.S.#FIELD>
#FIELD NAME = AUTHOR_S>Highlands, M.E.
Schreiber, J.S.#FIELD>
#FIELD NAME = COLLATION>v. 23 p. 464-472#FIELD>
#FIELD NAME = CONTROLLED_TERMS>POTATO
STORAGE CONDITION#FIELD>
#FIELD NAME = DES>POTATO
STORAGE CONDITION#FIELD>
#FIELD NAME = ENTRY>20040601 #FIELD>
#FIELD NAME = NOTES>J. Sci. Food Agr. 10 (1959) i-98#FIELD>
#FIELD NAME = NOTE_S>J. Sci. Food Agr. 10 (1959) i-98#FIELD>
#FIELD NAME = PUBLISHED>(1958)#FIELD>
#FIELD NAME = PY>(1958)#FIELD>
#FIELD NAME = RECTYPE>UNKNOWN-A#FIELD>
#FIELD NAME = SCOPE>C43 : Other problems
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:#FIELD>
#FIELD NAME = SCOPE_ENGL>Other problems#FIELD>
#FIELD NAME = SCOPE_GERM>Sonstige Probleme#FIELD>
#FIELD NAME = SERCOLLAT>v. 23 p. 464-472#FIELD>
#FIELD NAME = SERPUBDATE>(1958)#FIELD>
#FIELD NAME = SERTITLE>Food Res.#FIELD>
#FIELD NAME = SOURCE>Food Res.#FIELD>
#FIELD NAME = SUBJCODE>C43#FIELD>
#FIELD NAME = TITLE>Biochemistry of irradiated potatoes stored under commercial conditions#FIELD>
#FIELD NAME = TITLE_S>Biochemistry of irradiated potatoes stored under commercial conditions#FIELD>
#FIELD NAME = UPDATE>20040601 #FIELD>
#FIELD NAME = NUMBER>70002118#FIELD>
#FIELD NAME = AUTHOR>Teramoto, S.#FIELD>
#FIELD NAME = AUTHORS>Teramoto, S.#FIELD>
#FIELD NAME = AUTHOR_S>Teramoto, S.#FIELD>
#FIELD NAME = COLLATION>v. 37 p. 107-110#FIELD>
#FIELD NAME = CONTROLLED_TERMS>SWEET POTATO
ALCOHOL
MICROORGANISMS
SPOILAGE#FIELD>
#FIELD NAME = DES>SWEET POTATO
ALCOHOL
MICROORGANISMS
SPOILAGE#FIELD>
#FIELD NAME = ENTRY>20040601 #FIELD>
#FIELD NAME = NOTES>NSA 16 (1962) 22204#FIELD>
#FIELD NAME = NOTE_S>NSA 16 (1962) 22204#FIELD>
#FIELD NAME = PUBLISHED>(1959)#FIELD>
#FIELD NAME = PY>(1959)#FIELD>
#FIELD NAME = RECTYPE>UNKNOWN-A#FIELD>
#FIELD NAME = SCOPE>C43 : Other problems
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