Appellant Wood was convicted on three counts of child molestation. The alleged incidents involved two children, Wood's two-year-old daughter and her playmate, a neighbor's daughter. As his sole enumeration of error Wood asserts that the applicable statute, OCGA 24-9-5, as amended, did not become effective in its present form until April 1989, some sixteen months after the occurrence of the alleged instances in December 1987, and that the trial court erred in allegedly failing to make a proper determination of the older child's credibility and competency. Held: OCGA 24-9-5, as amended, deals with a witness' credibility rather than only with his or her competency; in its original form the statute speaks only of competency. The record reveals that during the trial the prosecuting attorney asked the neighbor's daughter (now nearly nine years old) a series of questions, the answers to which clearly demonstrated that she understood both the difference between truth and falsehood and the importance of telling only the truth, thereby complying with the requirements of OCGA 24-9-5. Smith v. State, 247 Ga. 511 (277 SE2d 53) (1981). The record further reveals that appellant's counsel failed to question the witness following the examination by the State, or to object at that time on competency grounds, even though the trial court expressly ruled that he would be allowed to examine the witness. Thus counsel's conduct amounted to a waiver of the right to raise the issue of the witness' competency on appeal. Brinson v. State, 191 Ga. App. 151 (381 SE2d 292) (1989); Hollis v. State, 191 Ga. App. 525 (382 SE2d 145) (1989). We find no merit in appellant's enumeration. Cook & Palmour, Kristina C. Connelly, for appellant. | 
