sorry for late reply, morning here.
it does not work, the script says error code :
__WD_Post: URL=HTTP://127.0.0.1:9515/session/83bf3dce199f053f4898722796b1ba28/element; $sData={"using":"xpath","value":"//input[@type='button'][@value='OK']"}
__WD_Post: StatusCode=404; ResponseText={"value":{"error":"no such element","message":"Unable to locate element: {\"method\":\"xpath\",\"selector\":\"//input[@type='button'][@value='OK']\"}\n (Session info: chrome=75.0.3770.100)","stacktrace":"Backtrace:\n\tOrdinal0 [0x003DDB63+1432419]\n\tOrdinal0 [0x00358D81+888193]\n\tOrdinal0 [0x002FB9D1+506321]\n\tOrdinal0 [0x0029CA05+117253]\n\tOrdinal0 [0x002B7F20+229152]\n\tOrdinal0 [0x002AEA40+191040]\n\tOrdinal0 [0x002B6D94+224660]\n\tOrdinal0 [0x002AE8AB+190635]\n\tOrdinal0 [0x00295F16+89878]\n\tOrdinal0 [0x0029757A+95610]\n\tOrdinal0 [0x00297474+95348]\n\tGetHandleVerifier [0x0053DE7C+1274156]\n\tGetHandleVerifier [0x0048B6D9+543113]\n\tGetHandleVerifier [0x0048B4E0+542608]\n\tOrdinal0 [0x003EB508+1488136]\n\tGetHandleVerifier [0x0048BC86+544566]\n\tOrdinal0 [0x0036EEC5+978629]\n\tOrdinal0 [0x0037B35B+1028955]\n\tOrdinal0 [0x0037B49F+1029279]\n\tOrdinal0 [0x0037A445+1025093]\n\tBaseThreadInitThunk [0x755B7C04+36]\n\tRtlInitializeExceptionChain [0x773FAB8F+143]\n\tRtlInitializeExceptionChain [0x773FAB5A+90]\n"}}
_WD_FindElement: {"value":{"error":"no such element","message":"Unable to locate element: {\"method\":\"xpath\",\"selector\":\"//input[@type='button'][@value='OK']\"}\n (Session info: chrome=75.0.3770.100)","stacktrace":"Backtrace:\n\tOrdinal0 [0x003DDB63+1432419]\n\tOrdinal0 [0x00358D81+888193]\n\tOrdinal0 [0x002FB9D1+506321]\n\tOrdinal0 [0x0029CA05+117253]\n\tOrdinal0 [0x002B7F20+229152]\n\tOrdinal0 [0x002AEA40+191040]\n\tOrdinal0 [0x002B6D94+224660]\n\tOrdinal0 [0x002AE8AB+190635]\n\tOrdinal0 [0x00295F16+89878]\n\tOrdinal0 [0x0029757A+95610]\n\tOrdinal0 [0x00297474+95348]\n\tGetHandleVerifier [0x0053DE7C+1274156]\n\tGetHandleVerifier [0x0048B6D9+543113]\n\tGetHandleVerifier [0x0048B4E0+542608]\n\tOrdinal0 [0x003EB508+1488136]\n\tGetHandleVerifier [0x0048BC86+544566]\n\tOrdinal0 [0x0036EEC5+978629]\n\tOrdinal0 [0x0037B35B+1028955]\n\tOrdinal0 [0x0037B49F+1029279]\n\tOrdinal0 [0x0037A445+1025093]\n\tBaseThreadInitThunk [0x755B7C04+36]\n\tRtlInitializeExceptionChain [0x773FAB8F+143]\n\tRtlInitializeExceptionChain [0x773FAB5A+90]\n"}}
_WD_FindElement ==> No match: HTTP status = 404
i've also tried
"//*[@type='button'][@value='OK']")
"//*[@type='button'][@class='text pb default']")
"//*[@button='OK']")
"//input[@button='OK']")
but it all returns to _WD_FindElement ==> No match: HTTP status = 404
are there any alternative solutions?