Linking a HIGH and LOW field to a PV

[Bo Jakobsen <lister@f77.dk>]

Hi

I am trying to get "limits" to work on a "Soft Channel" record.
The challenge is that I have the limit values in another record, and want to make a link between the two records.

I would therefore like to something like this:

record(ao, "$(P):SUBCRYO_SETP_S") {
  field(DESC, "Huginn Sub-cryostat system setpoint")
  field(DTYP, "Soft Channel")
  field(VAL, "300")
  field(PREC, "3")
  field(EGU, "K")
  field(PINI, "YES")
  field(HSV, "MINOR")
  field(LSV, "MINOR")
  field(LOW, "$(P):SUBCRYO_SETP_MIN.VAL CP")
  field(HIGH, "$(P):SUBCRYO_SETP_MAX CP")
}


which, however, does not work.
It this possible, and in that case how.

Thanks in advance.
    Bo