Forcing problems

Greetings,

I am trying to force two signals with absolute time references

here is the code

# force -freeze sim:/tb_top/vsc_inst1/top_fpga/ls_top_comm_new_inst/ls_pkt_rx_inst/crc_good_trig 1 @50000 ns, 0 @52500 ns, 1 @60000 ns, 0 @60500 ns,

force -freeze sim:/tb_top/vsc_inst1/top_fpga/ls_top_comm_new_inst/ls_pkt_rx_inst/scan_armed 16#00000001 @5000 ns, 16#00000000 @5250 ns, 16#00000001 @6000 ns, 16#00000000 @6050 ns,

It keeps telling me that

# ** Error: (vsim-4007) A value argument is required.# Usage: force [-deposit | -drive | -freeze] [-cancel <period>] [-repeat <period>] <item_name> <value> [<time>] [, <value> <time> ...]# Error in macro ./do_files/run.do line 23# ** Error: (vsim-4007) A value argument is required.# Usage: force [-deposit | -drive | -freeze] [-cancel <period>] [-repeat <period>] <item_name> <value> [<time>] [, <value> <time> ...]# while executing

This worked last time but somehow this time around it does not work

Any suggestions