The evaluation and ascription of probative value are primary functions of the trial court who saw and watched the demeanour of the witnesses who testified at the trial. It is not proper for an appellate court to interfere where the trial court has properly discharged its functions in relation thereto. This appeal court will not interfere with findings of fact where there is sufficient evidence backed by the pleadings in support of such findings and where no substantial error is apparent on the record such as a miscarriage of justice or violation of some principle of law or procedure.
– Musdapher, JSC. Atta v. Ezeanah (2000)