- $thing->{fpc16n} = _filter($dxchan, $thing->{pc16n}) if $thing->{pc16u} && $thing->{pc16n};
- $thing->{fpc17n} = _filter($dxchan, $thing->{pc17n}) if $thing->{pc17u} && $thing->{pc17n};
+ my @n16 = _filter($dxchan, $thing->{pc16n}) if $thing->{pc16u} && $thing->{pc16n};
+ $thing->{fpc16n} = $n16[0] if @n16;
+ my @n17 = _filter($dxchan, $thing->{pc17n}) if $thing->{pc17u} && $thing->{pc17n};
+ $thing->{fpc17n} = $n17[0] if @n17;