Using cmd line when multiple quartus versions installed

hi,

I have written a script in ticle (tcl) to create, compile and program the altera's device cyclone II.

First two operations means create and compile design is working fine but when I am adding command to program the device it is showing errors that

"Invalid command name quartus_pgm "

while executing

unknown_original quartus_pgm -c USB-Blaster -m JTAG -o P"

please give me some solution.

the script which I am using is shown below.

basically I want to program the device from the script itself.

//////////////////////////////////

load_package flow

project_new test3 -overwrite

# Assign family, device, and top-level file

set_global_assignment -name FAMILY CycloneII

set_global_assignment -name DEVICE EP2C70F896C6

set_global_assignment -name VERILOG_FILE mux2_1.v

set_global_assignment -name TOP_LEVEL_ENTITY mux2_1

# Assign pins

set_location_assignment -to clk Pin_AD15

set_location_assignment -to reset Pin_T29

# compile the project

execute_flow -compile

# Other assignments could follow

quartus_pgm -c USB-Blaster -m JTAG -o P;mux2_1.sof

project_close

/////////////////////////////////////////////////////////

Thanks