The script does not work anymore. Remote logon can work again ~! Solution

The script does not work anymore. Remote logon can work again ~! Solution-general Linux technology-Linux technology and application information. For more information, see the following. I want to maintain a server and write a server restart script .. The content is as follows:
#! /Bin/sh
#---------------------------------------
PRO = load_test
TestFunc ()
{
PROCESS_NUM = 'ps-ef | grep $ PRO | grep-v "grep" | wc-l'
Echo "------------- GET $ PRO num = $ PROCESS_NUM"
If [$ PROCESS_NUM-eq 0]; then
Echo "---------- return 0"
Return 0
Else
Echo "---------- return 1"
Return 1
Fi

}
Echo "++"
While [1]; do
TestFunc
TESTRET = $?
Echo "return the value is $ TESTRET"
# Killall-9 testq 0]; then
Echo "$ PRO is starting now ......"
./$ PRO &
Else
Echo "$ PRO is Running now ......."
Fi
Sleep 5
Done


The following problems are encountered:
Because the server runs in a remote linux (ubuntu .. I put this script in the same directory of the executable program. Normally, when load_test dump is completed, the script can be restarted normally.
But several times, load_test dump, and the script has not restarted the program. I want to log on remotely to see what is going on. When I log on successfully, load_test restarts again ..

The above phenomenon seems to me that my script is sleep while running in the background, and I have activated the script again when I log on...
This is a strange phenomenon. I don't know the specific reason. Please advise me !!