User Module Error

Hello guys,

I am new to Quartus and I have just started using it for my project. I am using a user module for square root function in my code. According to my understanding , I have instantiated the user module in my main module. It is as below:

mysqrt_alt_restoring_sqrt_cta mysqrt(.aclr(clear),.clken(clkenable),.clock(CLOCK_50),.rad(vz),.root_result(sqroot));

The problem that I am facing is when I compile the code it gives me following error :

Error (10170): Verilog HDL syntax error at test_mestimation.v(166) near text "mysqrt"; expecting "<=", or "="

I am not able to figure out why this error is arising, the syntax looks perfectly fine.

Could you guys please help!! thanks a lot in advance.