xbt_assert(value, "\tProperty %s is undefined (where it should)", exist);
xbt_assert(!strcmp(value, "180"), "\tValue of property %s is defined to %s (where it should be 180)", exist, value);
XBT_INFO(" Property: %s old value: %s", exist, value);
XBT_INFO("== Trying to modify a host property");
xbt_assert(value, "\tProperty %s is undefined (where it should)", exist);
xbt_assert(!strcmp(value, "180"), "\tValue of property %s is defined to %s (where it should be 180)", exist, value);
XBT_INFO(" Property: %s old value: %s", exist, value);
XBT_INFO("== Trying to modify a host property");