KACE Product Support

Since the K2100 4.1 update, I get an error while creating the recovery partition when deploying a MacOs Sierra image. In previous version i have used included script without problems. Error says 'create_osx_recovery_partition.sh: line 23: let: tds=: syntax error: operand expected (error token is "=")
remaining partition space is too low (-870203392)
no room for OS'
Anyone have the same problem? Entire recovery creation script;

imagename="RecoveryHD10112"
partloc="/opt/kace/petemp/ImageStore/$imagename"
 
if [[ ! -a $partloc ]]
    then
      echo "could not find recovery partition image "
      echo "should be $partloc"
      exit 1
fi
 
dcheck=`diskutil list | grep disk0s | wc -l | awk '{print $1}'`
if [[ $dcheck != "2" ]]
   then
     echo "can not be run on disk0 without and existing HFS partition"
     echo "or with more than one. there are $dcheck on disk0"
     exit 1
fi
 
 
let rpartsizeb=`ls -l $partloc | awk '{print $5}'`
let rpartsizes=$rpartsizeb/512
 
let tds=`diskutil info disk0 | grep "Total Size" | awk '{print $5}' | sed 's/(//g'`
 
let efisize=220200960
 
let partsize=$tds-$rpartsizeb-$efisize
if (($partsize<$efisize))
   then
     echo "remaining partition space is too low ($partsize)"
     echo "no room for OS"
     exit 1
fi
res="$partsize""B"
 
/usr/sbin/diskutil resizeVolume "$KACE_SYSTEM_DRIVE_NAME" "$res"
 
slice=`df | grep disk0 | awk '{print $1}' `
 
sleep 5
/usr/bin/hdiutil detach $slice
 
let parts=`gpt show disk0 | grep 48465300 | awk '{print $1 }'`
let partl=`gpt show disk0 | grep 48465300 | awk '{print $2 }'`
let partbase=$parts+$partl
gpt add -b $partbase -s $rpartsizes -t 426F6F74-0000-11AA-AA11-00306543ECAC disk0
pname="Recovery HD"
 
dd if=$partloc of=/dev/disk0s3
sleep 2
/usr/bin/hdiutil detach $slice
gpt label -i 3 -l "$pname" disk0
 
 
exit 0