donc ce code devrait fonctionner ?

String eq_death_rate_deb = pop.getNaturalDeathRate().getContent();
eq_death_rate = eq_death_rate.replaceFirst(".*\n", "double Ktemp=context.getValueAndCompute(\"nephrops.naturalDeathRate.Ktemp\","+mor+");\n"); 
pop.getNaturalDeathRate().setContent(eq_death_rate);

eq_death_rate = eq_death_rate.replaceFirst(".*\n", "double Ktemp=context.getValueAndCompute(\"nephrops.naturalDeathRate.Ktemp\","+mor+");\n");

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Stephanie MAHEVAS
UMR MARBEC - site de Sète
IFREMER/HM 
https://annuaire.ifremer.fr/cv/16343/

 Tel: (33) 04 99 57 32 39  (8239)  - 06 75 83 59 33

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