kicker not converted by sixtrack command

[rdemaria]

k1:hkicker,kick=1;
k2:vkicker,kick=-1;

ss: line=(kk,k1,k2);
beam;
use,sequence=ss;
twiss,betx=1,bety=1;
sixtrack;

does not convert kickers:

SINGLE ELEMENTS---------------------------------------------------------
k1                                                 1    1.000000000000000e+00   0.000000000000000e+00    0.000000000000000e+00    0.000000000000000e+00    0.000000000000000e+00    0.000000000000000e+00
k2                                                -1   -1.000000000000000e+00   0.000000000000000e+00    0.000000000000000e+00    0.000000000000000e+00    0.000000000000000e+00    0.000000000000000e+00
NEXT
BLOCK DEFINITIONS-------------------------------------------------------
1  1
NEXT
STRUCTURE INPUT---------------------------------------------------------
k1                                               k2                                               
NEXT

The code has at least some logic implemented, though: