call script event is missing

[SambaGodschynski]

open rucki zucki.
change workaround in bass:

[
type: template;
name: bass.50sRock.normal;
instrument: bass.pose;
{
   /call: highlight _instrument="Bs" _value="low"/
   I4. I8 V4 III8 V8 |
   I4. I8 I8 III V III |
   /call: highlight _instrument="Bs" _value="high"/
   I4. I8 V4 III8 V8 |
   I,4. I8 I,  I   I#, I#   |
}
]

expected

first call cue will be created

actual

first cue event is missing