Two bone IK Constraint is not working

[taida-zero]

Hi everyone.
I want to move the leg using two bone IK contraint but its not working.

                     **before moving the target**

                     **after moving it**

I want to use it also on the right arm but is not working

This character have no animator or any animation I only gave it the aim constraint and its working and foot constraint and it didn’t work.

[Bemfoo]

The order of bone is reversed; “Tip” indicates the end bone (foot/hand), and “Root” indicates the root bone (upper arm/leg).