Update new loop range on sample load.

Virtual instruments HALion
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2

Are you using Path Browser or Drop control on your macro page?

Try this script in program tree. Connect the Path Browser or Drop to script parameter Filename.
It should set the sample length, loop points if present and also change the zone name. Be aware of that when setting scope for waveform or Sample Display template.

function filenameChanged()
  local zone = this.parent:findZones(true)[1]
  local sample = AudioFile.open(Filename)
  if sample.valid then
    local name = string.sub(string.match(sample.fileName,"[^\\/]+$"),1,-5)
    zone:setName(name)
    zone:setParameter("SampleOsc.Filename", sample.fileName)
    zone:setParameter("SampleOsc.SampleEnd", sample.length)
    local rootKey = sample.rootKey
    if rootKey then
      zone:setParameter("SampleOsc.Rootkey", rootKey)
    else
      zone:setParameter("SampleOsc.Rootkey", 60)
    end
    local loops = sample.loops
    if loops[1] then
      zone:setParameter("SampleOsc.SustainLoopModeA", 1)
      zone:setParameter("SampleOsc.SustainLoopStartA", loops[1].loopStart)
      zone:setParameter("SampleOsc.SustainLoopEndA", loops[1].loopEnd)
    else
      zone:setParameter("SampleOsc.SustainLoopModeA", 0)
      zone:setParameter("SampleOsc.SustainLoopStartA", 0)
      zone:setParameter("SampleOsc.SustainLoopEndA", 0)
    end
  end
end

defineParameter("Filename", nil, "", filenameChanged)