On change client script not working

[jack33]

Hi All,

I have 2 fields on form 'Field 1' and 'Field 2'. based on these two fields I am adding option to 'Field 3'.

If 'Field 1' is selected showing option 'abc' in Field 3 drop down with currently available choices. And if 'Field 2' selected showing 'xyz'. For this created 2 on change client script for 'Field 1' an 'Field 2' separately

which is working fine.

Now the issue is, if I am changing any field other than 'Field 1' and 'Field 2' both 'abc' and 'xyz' become visible in 'Field 3' dropdown.

Please let me know is the any way with which I can control this. Thank you in Advance

[jack33]

No Field 4 client script not setting any value on Field 1 and 2. 

When I change Field 4 value all value become visible which i am hiding with client script written on Field 1 and 2.