Script problems for multiple interfaces in global variable

Hi,
I’ve a problem with the following script:

:global VLANBRDNAME “bridge_vlan10”
:global VPNSERVER “PPTP-FIN”
:global ROUTMARK “vpn”

/ip route vrf
add interfaces=$VLANBRDNAME, $VPNSERVER routing-mark=$ROUTMARK

After executing in terminal window, the following error message appear (red mark at comma position between $VLANBRDNAME, $VPNSERVER):
[admin@MikroTik_2] /ip route vrf> add interfaces=$VLANBRDNAME, $VPNSERVER routing-mark=$ROUTMARK
expected end of command (line 1 column 28)

do not put space after ,

Hi,
thank you for support. I’ve remove the space between the variables, because the same error occur:

[admin@MikroTik_2] /ip route vrf> add interfaces=$VLANBRDNAME,$VPNSERVER routing-mark=$ROUTMARK
expected end of command (line 1 column 28)

If i put the values direct in the command it works:
/ip route vrf
add interfaces=bridge_vlan10,PPTP-FIN routing-mark=vpn

The not working part is part of a huge complex script and I need to find a solution. I’ve no idea to solve the problem.

add interfaces=“$VLANBRDNAME,$VPNSERVER” routing-mark=$ROUTMARK

Thank you, that is the right solution !